Pressure units converter - Pressure units table

Pressure Units converter

Conversion of pressure units

Unit bar Pa hPa kPa MPa atm PSI mmH2O inH2O torr mmHg inHg PSF at
1 bar 1 100000 1000 100 0,1 0,98692 14,5038 10197,2 401,463 750,062 750,062 29,53 2088,54 1,01972
1 Pa 0,00001 1 0,01 0,001 0 0,00001 0,00015 0,10197 0,00402 0,0075 0,0075 0,0003 0,02089 0,00001
1 hPa 0,001 100 1 0,1 0,0001 0,00099 0,0145 10,1972 0,40146 0,75006 0,75006 0,02953 2,08854 0,00102
1 kPa 0,01 1000 10 1 0,001 0,00987 0,14504 101,972 4,01865 7,50062 7,50062 0,2953 20,8855 0,0102
1 MPa 10 1000000 10000 1000 1 9,86923 145,04 101972 4018,65 7500,62 7500,62 295,3 20885,5 10,1972
1 atm 1,01325 101325 1013,25 101,325 0,10133 1 14,6959 10332,3 406,782 760 760 29,9213 2116,22 1,03323
1 PSI 0,06895 6894,76 68,9476 6,89476 0,00689 0,06805 1 703,069 27,6799 51,7149 51,7149 2,03602 144 0,07031
1 mmH2O 0,0001 9,80665 0,09807 0,00981 0,00001 0,0001 0,00142 1 0,03937 0,07356 0,07356 0,0029 0,20482 0,0001
1 inH2O 0,00249 249,082 2,49082 0,24908 0,00025 0,00246 0,03613 25,4 1 1,86826 1,86826 0,07356 5,20232 0,00254
1 torr 0,00133 133,322 1,33322 0,13332 0,00013 0,00132 0,01934 13,5951 0,53524 1 1 0,03937 2,7845 0,00136
1 mmHg 0,00133 133,322 1,33322 0,13332 0,00013 0,00132 0,01934 13,5951 0,53524 1 1 0,03937 2,7845 0,00136
1 inHg 0,03342 3386,39 33,8639 3,38639 0,00339 0,03342 0,49115 345,315 13,5951 25,4 25,4 1 70,307 0,03453
1 PSF 0,00048 47,8803 0,4788 0,04788 0,00005 0,00047 0,00694 4,88243 0,19226 0,35913 0,35913 0,01414 1 0,00047
1 at 0,98067 98066,5 980,665 98,0665 0,09807 0,96784 14,2233 10000 393,701 735,559 735,559 28,959 2048,16 1

Conversion table for pressure units

PSI bar Pa hPa kPa MPa atm mmH2O inH2O torr mmHg inHg PSF at
0.015 0.001 100 1 0.1 0 0.001 10.197 0.401 0.75 0.75 0.03 2.089 0.001
0.725 0.05 5000 50 5 0.005 0.049 509.858 20.093 37.503 37.503 1.477 104.427 0.051
1.45 0.1 10000 100 10 0.01 0.099 1019.72 40.146 75.006 75.006 2.953 208.855 0.102
7.252 0.5 50000 500 50 0.05 0.493 5098.58 200.732 375.031 375.031 14.765 1044.27 0.51
8 0.552 55158.1 551.581 55.158 0.055 0.544 5624.55 221.439 413.719 413.719 16.288 1152 0.562
10 0.689 68947.6 689.476 68.948 0.069 0.68 7030.69 276.799 517.149 517.149 20.36 1440 0.703
14.504 1 100000 1000 100 0.1 0.987 10197.2 401.464 750.063 750.063 29.53 2088.55 1.02
15 1.034 103421 1034.21 103.421 0.103 1.021 10546 415.199 775.724 775.724 30.54 2160 1.055
20 1.379 137895 1378.95 137.895 0.138 1.361 14061.4 553.598 1034.3 1034.3 40.72 2880 1.406
25 1.724 172369 1723.69 172.369 0.172 1.701 17576.7 691.998 1292.87 1292.87 50.901 3600 1.758
29.008 2 200000 2000 200 0.2 1.974 20394.3 802.927 1500.13 1500.13 59.06 4177.09 2.039
30 2.068 206843 2068.43 206.843 0.207 2.041 21092.1 830.397 1551.45 1551.45 61.081 4320 2.109
31.908 2.2 220000 2200 220 0.22 2.171 22433.8 883.22 1650.14 1650.14 64.966 4594.8 2.243
32 2.206 220632 2206.32 220.632 0.221 2.177 22498.2 885.757 1654.88 1654.88 65.153 4608 2.25
33 2.275 227527 2275.27 227.527 0.228 2.246 23201.3 913.437 1706.59 1706.59 67.189 4752 2.32
33.359 2.3 230000 2300 230 0.23 2.27 23453.5 923.367 1725.14 1725.14 67.919 4803.66 2.345
34 2.344 234422 2344.22 234.422 0.234 2.314 23904.3 941.117 1758.31 1758.31 69.225 4896 2.39
35 2.413 241317 2413.17 241.317 0.241 2.382 24607.4 968.797 1810.02 1810.02 71.261 5040 2.461
36 2.482 248211 2482.11 248.211 0.248 2.45 25310.5 996.476 1861.74 1861.74 73.297 5184 2.531
36.26 2.5 250000 2500 250 0.25 2.467 25492.9 1003.66 1875.16 1875.16 73.825 5221.37 2.549
38 2.62 262001 2620.01 262.001 0.262 2.586 26716.6 1051.84 1965.17 1965.17 77.369 5472 2.672
39 2.689 268896 2688.96 268.896 0.269 2.654 27419.7 1079.52 2016.88 2016.88 79.405 5616 2.742
40 2.758 275790 2757.9 275.79 0.276 2.722 28122.8 1107.2 2068.6 2068.6 81.441 5760 2.812
40.611 2.8 280000 2800 280 0.28 2.763 28552.1 1124.1 2100.18 2100.18 82.684 5847.93 2.855
43.511 3 300000 3000 300 0.3 2.961 30591.5 1204.39 2250.19 2250.19 88.59 6265.64 3.059
44 3.034 303369 3033.69 303.369 0.303 2.994 30935 1217.92 2275.46 2275.46 89.585 6336 3.094
45 3.103 310264 3102.64 310.264 0.31 3.062 31638.1 1245.6 2327.17 2327.17 91.621 6480 3.164
50 3.447 344738 3447.38 344.738 0.345 3.402 35153.5 1384 2585.75 2585.75 101.801 7200 3.515
50.763 3.5 350000 3500 350 0.35 3.454 35690.1 1405.12 2625.22 2625.22 103.355 7309.92 3.569
51 3.516 351633 3516.33 351.633 0.352 3.47 35856.5 1411.68 2637.46 2637.46 103.837 7344 3.586
55 3.792 379212 3792.12 379.212 0.379 3.743 38668.8 1522.4 2844.32 2844.32 111.981 7920 3.867
60 4.137 413686 4136.86 413.686 0.414 4.083 42184.1 1660.79 3102.89 3102.89 122.161 8640 4.218
60.916 4.2 420000 420 420 0.42 4.145 42828.1 1686.15 3150.26 3150.26 124.026 8771.9 4.283
65 4.482 448159 4481.59 448.159 0.448 4.423 45699.5 1799.19 3361.47 3361.47 132.341 9360 4.57
69 4.757 475738 4757.38 475.738 0.476 4.695 48511.8 1909.91 3568.33 3568.33 140.485 9936 4.851
70 4.826 482633 4826.33 482.633 0.483 4.763 49214.8 1937.59 3620.04 3620.04 142.521 10080 4.921
72.519 5 500000 5000 500 0.5 4.935 50985.8 2007.32 3750.31 3750.31 147.65 10442.7 5.099
75 5.171 517107 5171.07 517.107 0.517 5.103 52730.2 2075.99 3878.62 3878.62 152.702 10800 5.273
80 5.516 551581 5515.81 551.581 0.552 5.444 56245.5 2214.39 4137.19 4137.19 162.882 11520 5.625
87.023 6 600000 6000 600 0.6 5.922 61183 2408.78 4500.38 4500.38 177.18 12531.3 6.118
90 6.205 620528 6205.28 620.528 0.621 6.124 63276.2 2491.19 4654.34 4654.34 183.242 12960 6.328
94 6.481 648107 6481.07 648.107 0.648 6.396 66088.5 2601.91 4861.2 4861.2 191.386 13536 6.609
100 6.895 689476 6894.76 689.476 0.689 6.805 70306.9 2767.99 5171.49 5171.49 203.602 14400 7.031
110 7.584 758424 7584.24 758.424 0.758 7.485 77337.6 3044.79 5688.64 5688.64 223.962 15840 7.734
115 7.929 792897 7928.97 792.897 0.793 7.825 80852.9 3183.19 5947.21 5947.21 234.142 16560 8.085
120 8.274 827371 8273.71 827.371 0.827 8.166 84368.3 3321.59 6205.79 6205.79 244.322 17280 8.437
125 8.618 861845 8618.45 861.845 0.862 8.506 87883.6 3459.99 6464.36 6464.36 254.503 18000 8.788
145.038 10 1000000 10000 1000 1 9.869 101972 4014.64 7500.63 7500.63 295.3 20885.5 10.197
150 10.342 1034214 10342.1 1034.21 1.034 10.207 105460 4151.99 7757.24 7757.24 305.403 21600 10.546
160 11.032 1103162 11031.6 1103.16 1.103 10.887 112491 4428.78 8274.38 8274.38 325.763 23040 11.249
200 13.79 1378952 13789.5 1378.95 1.379 13.609 140614 5535.98 10343 10343 407.204 28800 14.061
300 20.684 2068428 20684.3 2068.43 2.068 20.414 210921 8303.97 15514.5 15514.5 610.806 43200 21.092
400 27.579 2757904 27579 2757.9 2.758 27.218 281228 11072 20686 20686 814.408 57600 28.123
500 34.474 3447380 34473.8 3447.38 3.447 34.023 351535 13840 25857.5 25857.5 1018.01 72000 35.154
600 41.369 4136856 41368.6 4136.86 4.137 40.828 421841 16607.9 31028.9 31028.9 1221.61 86400 42.184
700 48.263 4826332 48263.3 4826.33 4.826 47.632 492148 19375.9 36200.4 36200.4 1425.21 100800 49.215
800 55.158 5515808 55158.1 5515.81 5.516 54.437 562455 22143.9 41371.9 41371.9 1628.82 115200 56.246
900 62.053 6205284 62052.8 6205.28 6.205 61.241 632762 24911.9 46543.4 46543.4 1832.42 129600 63.276
1000 68.948 6894760 68947.6 6894.76 6.895 68.046 703069 27679.9 51714.9 51714.9 2036.02 144000 70.307
1100 75.842 7584236 75842.4 7584.24 7.584 74.851 773376 30447.9 56886.4 56886.4 2239.62 158400 77.338
1200 82.737 8273712 82737.1 8273.71 8.274 81.655 843683 33215.9 62057.9 62057.9 2443.22 172800 84.368
1300 89.632 8963188 89631.9 8963.19 8.963 88.46 913990 35983.9 67229.4 67229.4 2646.83 187200 91.399
1400 96.527 9652664 96526.6 9652.66 9.653 95.264 984297 38751.9 72400.9 72400.9 2850.43 201600 98.43
1450.38 100 1E+07 100000 10000 10 98.693 1019717 40146.4 75006.3 75006.3 2953 208855 101.972
1500 103.421 1E+07 103421 10342.1 10.342 102.069 1054604 41519.9 77572.4 77572.4 3054.03 216000 105.461
1600 110.316 1,1E+07 110316 11031.6 11.032 108.874 1124910 44287.8 82743.8 82743.8 3257.63 230400 112.491
1700 117.211 1,2E+07 117211 11721.1 11.721 115.678 1195217 47055.8 87915.3 87915.3 3461.23 244800 119.522
1800 124.106 1,2E+07 124106 12410.6 12.411 122.483 1265524 49823.8 93086.8 93086.8 3664.84 259200 126.553
1900 131 1,3E+07 131000 13100 13.1 129.287 1335831 52591.8 98258.3 98258.3 3868.44 273600 133.583
2000 137.895 1,4E+07 137895 13789.5 13.79 136.092 1406138 55359.8 103430 103430 4072.04 288000 140.614
2100 144.79 1,4E+07 144790 14479 14.479 142.897 1476445 58127.8 108601 108601 4275.64 302400 147.645
2200 151.685 1,5E+07 151685 15168.5 15.168 149.701 1546752 60895.8 113773 113773 4479.24 316800 154.675
2300 158.579 1,6E+07 158579 15857.9 15.858 156.506 1617059 63663.8 118944 118944 4682.85 331200 161.706
2400 165.474 1,7E+07 165474 16547.4 16.547 163.31 1687366 66431.8 124116 124116 4886.45 345600 168.737
2500 172.369 1,7E+07 172369 17236.9 17.237 170.115 1757673 69199.8 129287 129287 5090.05 360000 175.768
2600 179.264 1,8E+07 179264 17926.4 17.926 176.92 1827979 71967.7 134459 134459 5293.65 374400 182.798
2700 186.159 1,9E+07 186159 18615.9 18.616 183.724 1898286 74735.7 139630 139630 5497.25 388800 189.829
2800 193.053 1,9E+07 193053 19305.3 19.305 190.529 1968593 77503.7 144802 144802 5700.86 403200 196.86
2900 199.948 2E+07 199948 19994.8 19.995 197.333 2038900 80271.7 149973 149973 5904.46 417600 203.89
2900.76 200 2E+07 200000 20000 20 197.385 2039434 80292.7 150013 150013 5906.01 417709 203.944
3000 206.843 2,1E+07 206843 20684.3 20.684 204.138 2109207 83039.7 155145 155145 6108.06 432000 210.921
3100 213.738 2,1E+07 213738 21373.8 21.374 210.943 2179514 85807.7 160316 160316 6311.66 446400 217.952
3200 220.632 2,2E+07 220632 22063.2 22.063 217.747 2249821 88575.7 165488 165488 6515.26 460800 224.982
3300 227.527 2,3E+07 227527 22752.7 22.753 224.552 2320128 91343.7 170659 170659 6718.87 475200 232.013
3400 234.422 2,3E+07 234422 23442.2 23.442 231.356 2390435 94111.7 175831 175831 6922.47 489600 239.044
3500 241.317 2,4E+07 241317 24131.7 24.132 238.161 2460742 96879.7 181002 181002 7126.07 504000 246.075
3600 248.211 2,5E+07 248211 24821.1 24.821 244.966 2531048 99647.6 186174 186174 7329.67 518400 253.105
3700 255.106 2,6E+07 255106 25510.6 25.511 251.77 2601355 102416 191345 191345 7533.27 532800 260.136
3800 262.001 2,6E+07 262001 26200.1 26.2 258.575 2671662 105184 196517 196517 7736.88 547200 267.167
3900 268.896 2,7E+07 268896 26889.6 26.89 265.379 2741969 107952 201688 201688 7940.48 561600 274.197
4000 275.79 2,8E+07 275790 27579 27.579 272.184 2812276 110720 206860 206860 8144.08 576000 281.228
4100 282.685 2,8E+07 282685 28268.5 28.269 278.989 2882583 113488 212031 212031 8347.68 590400 288.259
4200 289.58 2,9E+07 289580 28958 28.958 285.793 2952890 116256 217203 217203 8551.28 604800 295.289
4300 296.475 3E+07 296475 29647.5 29.647 292.598 3023197 119024 222374 222374 8754.89 619200 302.32
4400 303.369 3E+07 303369 30336.9 30.337 299.402 3093504 121792 227546 227546 8958.49 633600 309.351
4500 310.264 3,1E+07 310264 31026.4 31.026 306.207 3163811 124560 232717 232717 9162.09 648000 316.382
4600 317.159 3,2E+07 317159 31715.9 31.716 313.012 3234117 127328 237889 237889 9365.69 662400 323.412
4700 324.054 3,2E+07 324054 32405.4 32.405 319.816 3304424 130096 243060 243060 9569.29 676800 330.443
4800 330.948 3,3E+07 330948 33094.8 33.095 326.621 3374731 132864 248232 248232 9772.9 691200 337.474
4900 337.843 3,4E+07 337843 33784.3 33.784 333.425 3445038 135632 253403 253403 9976.5 705600 344.504
5000 344.738 3,4E+07 344738 34473.8 34.474 340.23 3515345 138400 258575 258575 10180.1 720000 351.535
5100 351.633 3,5E+07 351633 35163.3 35.163 347.035 3585652 141167 263746 263746 10383.7 734400 358.566
5200 358.528 3,6E+07 358528 35852.8 35.853 353.839 3655959 143935 268917 268917 10587.3 748800 365.596
5300 365.422 3,7E+07 365422 36542.2 36.542 360.644 3726266 146703 274089 274089 10790.9 763200 372.627
5400 372.317 3,7E+07 372317 37231.7 37.232 367.448 3796573 149471 279260 279260 10994.5 777600 379.658
5500 379.212 3,8E+07 379212 37921.2 37.921 374.253 3866880 152239 284432 284432 11198.1 792000 386.689
5600 386.107 3,9E+07 386107 38610.7 38.611 381.058 3937186 155007 289603 289603 11401.7 806400 393.719
5700 393.001 3,9E+07 393001 39300.1 39.3 387.862 4007493 157775 294775 294775 11605.3 820800 400.75
5800 399.896 4E+07 399896 39989.6 39.99 394.667 4077800 160543 299946 299946 11808.9 835200 407.781
5900 406.791 4,1E+07 406791 40679.1 40.679 401.471 4148107 163311 305118 305118 12012.5 849600 414.811
6000 413.686 4,1E+07 413686 41368.6 41.369 408.276 4218414 166079 310289 310289 12216.1 864000 421.842
6100 420.58 4,2E+07 420580 42058 42.058 415.081 4288721 168847 315461 315461 12419.7 878400 428.873
6200 427.475 4,3E+07 427475 42747.5 42.748 421.885 4359028 171615 320632 320632 12623.3 892800 435.903
6300 434.37 4,3E+07 434370 43437 43.437 428.69 4429335 174383 325804 325804 12826.9 907200 442.934
6400 441.265 4,4E+07 441265 44126.5 44.126 435.494 4499642 177151 330975 330975 13030.5 921600 449.965
6500 448.159 4,5E+07 448159 44815.9 44.816 442.299 4569949 179919 336147 336147 13234.1 936000 456.996
6600 455.054 4,6E+07 455054 45505.4 45.505 449.104 4640255 182687 341318 341318 13437.7 950400 464.026
6700 461.949 4,6E+07 461949 46194.9 46.195 455.908 4710562 185455 346490 346490 13641.3 964800 471.057
6800 468.844 4,7E+07 468844 46884.4 46.884 462.713 4780869 188223 351661 351661 13844.9 979200 478.088
6900 475.738 4,8E+07 475738 47573.8 47.574 469.517 4851176 190991 356833 356833 14048.5 993600 485.118
7000 482.633 4,8E+07 482633 48263.3 48.263 476.322 4921483 193759 362004 362004 14252.1 1008000 492.149
7100 489.528 4,9E+07 489528 48952.8 48.953 483.127 4991790 196527 367176 367176 14455.7 1022400 499.18
7200 496.423 5E+07 496423 49642.3 49.642 489.931 5062097 199295 372347 372347 14659.3 1036800 506.21
7300 503.317 5E+07 503317 50331.7 50.332 496.736 5132404 202063 377519 377519 14862.9 1051200 513.241
7400 510.212 5,1E+07 510212 51021.2 51.021 503.54 5202711 204831 382690 382690 15066.5 1065600 520.272
7500 517.107 5,2E+07 517107 51710.7 51.711 510.345 5273018 207599 387862 387862 15270.2 1080000 527.303
7600 524.002 5,2E+07 524002 52400.2 52.4 517.15 5343324 210367 393033 393033 15473.8 1094400 534.333
7700 530.897 5,3E+07 530897 53089.7 53.09 523.954 5413631 213135 398205 398205 15677.4 1108800 541.364
7800 537.791 5,4E+07 537791 53779.1 53.779 530.759 5483938 215903 403376 403376 15881 1123200 548.395
7900 544.686 5,4E+07 544686 54468.6 54.469 537.563 5554245 218671 408548 408548 16084.6 1137600 555.425
8000 551.581 5,5E+07 551581 55158.1 55.158 544.368 5624552 221439 413719 413719 16288.2 1152000 562.456
8100 558.476 5,6E+07 558476 55847.6 55.848 551.173 5694859 224207 418891 418891 16491.8 1166400 569.487
8200 565.37 5,7E+07 565370 56537 56.537 557.977 5765166 226975 424062 424062 16695.4 1180800 576.517
8300 572.265 5,7E+07 572265 57226.5 57.227 564.782 5835473 229743 429234 429234 16899 1195200 583.548
8400 579.16 5,8E+07 579160 57916 57.916 571.586 5905780 232511 434405 434405 17102.6 1209600 590.579
8500 586.055 5,9E+07 586055 58605.5 58.605 578.391 5976087 235279 439577 439577 17306.2 1224000 597.61
8600 592.949 5,9E+07 592949 59294.9 59.295 585.196 6046393 238047 444748 444748 17509.8 1238400 604.64
8700 599.844 6E+07 599844 59984.4 59.984 592 6116700 240815 449920 449920 17713.4 1252800 611.671
8800 606.739 6,1E+07 606739 60673.9 60.674 598.805 6187007 243583 455091 455091 17917 1267200 618.702
8900 613.634 6,1E+07 613634 61363.4 61.363 605.609 6257314 246351 460263 460263 18120.6 1281600 625.732
9000 620.528 6,2E+07 620528 62052.8 62.053 612.414 6327621 249119 465434 465434 18324.2 1296000 632.763
9100 627.423 6,3E+07 627423 62742.3 62.742 619.219 6397928 251887 470606 470606 18527.8 1310400 639.794
9200 634.318 6,3E+07 634318 63431.8 63.432 626.023 6468235 254655 475777 475777 18731.4 1324800 646.824
9300 641.213 6,4E+07 641213 64121.3 64.121 632.828 6538542 257423 480949 480949 18935 1339200 653.855
9400 648.107 6,5E+07 648107 64810.7 64.811 639.632 6608849 260191 486120 486120 19138.6 1353600 660.886
9500 655.002 6,6E+07 655002 65500.2 65.5 646.437 6679156 262959 491292 491292 19342.2 1368000 667.917
9600 661.897 6,6E+07 661897 66189.7 66.19 653.242 6749462 265727 496463 496463 19545.8 1382400 674.947
9700 668.792 6,7E+07 668792 66879.2 66.879 660.046 6819769 268495 501635 501635 19749.4 1396800 681.978
9800 675.686 6,8E+07 675686 67568.6 67.569 666.851 6890076 271263 506806 506806 19953 1411200 689.009
9900 682.581 6,8E+07 682581 68258.1 68.258 673.655 6960383 274031 511978 511978 20156.6 1425600 696.039
10000 689.476 6,9E+07 689476 68947.6 68.948 680.46 7030690 276799 517149 517149 20360.2 1440000 703.07
11000 758.424 7,6E+07 758424 75842.4 75.842 748.506 7733759 304479 568864 568864 22396.2 1584000 773.377
12000 827.371 8,3E+07 827371 82737.1 82.737 816.552 8436828 332159 620579 620579 24432.2 1728000 843.684
13000 896.319 9E+07 896319 89631.9 89.632 884.598 9139897 359839 672294 672294 26468.3 1872000 913.991
14000 965.266 9,7E+07 965266 96526.6 96.527 952.644 9842966 387519 724009 724009 28504.3 2016000 984.298
15000 1034.21 1E+08 1034214 103421 103.421 1020.69 1,1E+07 415199 775724 775724 30540.3 2160000 1054.61

What are the pressure units?

The pressure units are as follows:

  • bar (bar), 
  • pascal (Pa), 
  • hectopascal (hPa), 
  • kilopascal (kPa), 
  • megapascal (MPa), 
  • atmosphere (atm), 
  • PSI, 
  • millimetre water column (mmH2O), 
  • inch of water column (inH2O), 
  • torr (Tr, torr), 
  • millimetre of mercury (mmHg), 
  • inch of mercury column (inHg), 
  • PSF, 
  • technical atmosphere (at).

Read on and you will learn more about each of these.

What is a bar?

The bar is a unit of atmospheric pressure used in meteorology, oceanography, as well as other scientific and technical fields. The bar was introduced by the British meteorologist Napier Shaw in 1909 and quickly gained popularity in atmospheric science.

1 bar corresponds approximately to the pressure exerted

  • by a mass of 1 kg on an area of 1 cm², or
  • by a mass of 10 t on an area of 1 m².

Pressure unit converter bar

  • 1 bar = 100,000 Pa 
  • 1 bar = 1000 hPa 
  • 1 bar = 100 kPa 
  • 1 bar = 0.1 MPa 
  • 1 bar = 0.986923 atm 
  • 1 bar = 14.5038 PSI 
  • 1 bar = 10.197.1621 mmH2O 
  • 1 bar = 401.463 inH2O 
  • 1 bar = 750.062 torr 
  • 1 bar = 750.062 mmHg 
  • 1 bar = 29.53 inHg 
  • 1 bar = 2088.54 PSF 
  • 1 bar = 1.01972 at
Bar pressure unit converter to other pressure units

When are bars used to measure pressure?

Bars are used to measure pressure in the following applications:

  • Oceanography - In oceanography, the bar is used to measure water pressure, especially in deep water where it can be significant. This is crucial when studying the deep sea and underwater ecosystems 
  • Engineering and industry - In industry, the bar is used to measure pressure in hydraulic and pneumatic systems and air compressors. It is important in the design and operation of machinery and equipment such as pumps and motors. 
  • Automation and process control - In industrial automation and process control, bar is used to monitor and regulate pressure in various systems (e.g. cooling or heating), as well as in the chemical industry. 
  • Atmospheric and climate science - In atmospheric and climate research, pressure measured in bars helps scientists understand and model phenomena such as storm systems, cyclones, anticyclones and climate change. 
  • Aerospace technology - In aviation and astronautics, the bar is used to measure cabin pressure in aircraft and spacecraft, which is crucial for the safety and comfort of crew and passengers. 
  • Medicine and pharmacology - In medicine, the bar can be used to measure pressure in some specialised applications, such as hyperbaric oxygen therapy devices.

What is the pascal (Pa)?

Pascal (Pa) is the unit of measurement of pressure (and stress) in the International System of Units (SI). It is named after Blaise Pascal, a French mathematician, physicist and philosopher who contributed to the study of pressure and fluids.

Pascal is defined as the pressure exerted by a force of one newton (N) uniformly distributed over an area of one square metre (m²). In other words, 1 Pa = 1 N/m².

It is a relatively small unit, which is why multiples of it are often used in practical applications, such as kilopascals (kPa), megapascals (MPa) or gigapascals (GPa).

Conversion of pressure unit pascal (Pa)

  • 1 Pa = 0.00001 bar 
  • 1 Pa = 0.01 hPa 
  • 1 Pa = 0,001 kPa 
  • 1 Pa = 0,000001 MPa 
  • 1 Pa = 0.000009869232667160129 atm 
  • 1 Pa = 0.000145038 PSI 
  • 1 Pa = 0.101971621 mmH2O 
  • 1 Pa = 0.00401865 inH2O 
  • 1 Pa = 0.00750062 torr 
  • 1 Pa = 0.00750062 mmHg 
  • 1 Pa = 0,0002953 inHg 
  • 1 Pa = 0,0208855 PSF 
  • 1 Pa = 0,0000101972 at
Pascal (Pa) pressure unit converter to other pressure units

When are pascals used to measure pressure?

Pascals are used to measure pressure in many sectors of human activity, as it is one of the basic units in the SI system. Below you can find some of its main uses:

  • Science and research - Pascal is the basic unit for measuring pressure in most scientific research. It is used in physics, chemistry, engineering and geology to determine pressure in gases, liquids and solids. 
  • Meteorology - In meteorology, pascals are used to measure atmospheric pressure. While in practice hectopascals (hPa) are more commonly used, the pascal remains the reference unit. 
  • Engineering - In various engineering fields, including mechanical, chemical, civil and aeronautical engineering, pascals are used to measure pressure in hydraulic systems, pneumatic systems, lubrication systems, and for testing materials. 
  • Medicine - In medicine, pascals are used to measure blood pressure, intracranial pressure and intraocular pressure. Accurate pressure measurements are crucial for diagnosing and monitoring various health conditions. 
  • Technology and electronics - In semiconductor technology and other areas of electronics, pascals are used to measure pressure in manufacturing processes such as vapour deposition and acidorite processes. 
  • Astronomy and cosmology - Pascal is also used in astronomy and cosmology, where it is used to measure the pressure in space

What is a hectopascal (hPa)?

The hectopascal (hPa) is the SI unit of pressure measurement, equivalent to 100 pascals (Pa). With the term "hectopascal", the prefix "hecto-", meaning hundred, is combined with the unit "pascal". This is why 1 hPa = 100 Pa.

The hectopascal facilitates the measurement and recording of atmospheric pressure, which often oscillates around values of several hundred pascals.

Conversion of pressure unit hectopascal (hPa)

  • 1 hPa = 0.001 bar 
  • 1 hPa = 100 Pa 
  • 1 hPa = 0,1 kPa 
  • 1 hPa = 0,0001 MPa 
  • 1 hPa = 0,000986923 atm 
  • 1 hPa = 0,0145038 PSI 
  • 1 hPa = 10.1971621 mmH2O 
  • 1 hPa = 0.401463 inH2O 
  • 1 hPa = 0.750062 torr 
  • 1 hPa = 0,750062 mmHg 
  • 1 hPa = 0,02953 inHg 
  • 1 hPa = 2,08854 PSF 
  • 1 hPa = 0.00101972 at
Hectopascal (hPa) pressure unit converter to other pressure units

When are hectopascals used to measure pressure?

Hectopascals are used to measure pressure in the following areas:

  • Meteorology - Atmospheric pressure, which is crucial for weather forecasting and the study of climate change, is usually measured in hectopascals. They replaced millibars (mbar) as a step towards standardising measurements to the metric system. 
  • Atmospheric science and climatology - In addition to meteorology, hPa are also used in broad atmospheric research, including climatology. This helps scientists to analyse and model weather systems and to study climate change. 
  • Aviation - In aviation, hectopascal is used to measure atmospheric pressure, which is essential for safe flight planning and execution. Pilots and air traffic controllers use atmospheric pressure to determine aircraft altitude. 
  • Other scientific and technical applications - Although the hectopascal is mainly associated with meteorology, it can also be used in other fields that require precise pressure measurements, such as oceanography and engineering.

What is the kilopascal (kPa)?

The kilopascal (kPa) is a unit of pressure in the SI (International System of Units) system of measurement equal to one thousand pascals 1 kPa = 1000 Pa.

The introduction of the kilopascal stems from the need to facilitate measurement and recording for larger pressure values, where the use of pascals would be impractical due to the large number of digits.

Conversion of pressure unit kilopascal (kPa)

  • 1 kPa = 0.01 bar 
  • 1 kPa = 1000 Pa 
  • 1 kPa = 10 hPa 
  • 1 kPa = 0,001 MPa 
  • 1 kPa = 0,00986923 atm 
  • 1 kPa = 0,145038 PSI 
  • 1 kPa = 101.971621 mmH2O 
  • 1 kPa = 4.01865 inH2O 
  • 1 kPa = 7.50062 torr 
  • 1 kPa = 7,50062 mmHg 
  • 1 kPa = 0,2953 inHg 
  • 1 kPa = 20.8855 PSF 
  • 1 kPa = 0,0101972 at
Kilopascal (kPa) pressure unit converter to other pressure units

When are kilopascals used to measure pressure?

Kilopascals are used to measure pressure in the following applications:

  • Engineering and construction - In engineering, particularly mechanical and civil engineering, the kPa unit is used to measure stress as well as pressure in structures, materials and hydraulic systems. This is crucial for the design and safety analysis of structures such as bridges, buildings or dams. 
  • Automation and industry - In industry, kPa is used to measure pressure in various systems such as air compressors, HVAC (heating, ventilation and air-conditioning) systems and in controlled technological processes. 
  • Meteorology - Although meteorology is dominated by the usage of hectopascals (hPa), kPa can be used in specific situations, such as atmospheric studies requiring greater precision. 
  • Medicine - In medicine, kilopascals are sometimes used to measure blood pressure, as an alternative to traditional units such as mmHg (millimetres of mercury). 
  • Automotive - In automotive, kPa is often used to determine tyre pressure, which is crucial for vehicle safety and fuel efficiency. 
  • Science and research - In scientific research, especially in physics and chemistry, kPa is used for precise pressure measurements in experiments and laboratory studies.

What is a megapascal (MPa)?

The megapascal (MPa) is a unit of pressure measurement in the SI system that represents one million pascals - 1 MPa = 1 000 000 Pa or 1 000 kPa.

The megapascal has gained popularity due to the need to more easily manage the very large pressure values that often occur in various industrial and scientific applications.

Conversion of pressure unit Megapascal (MPa)

  • 1 MPa = 10 bar 
  • 1 MPa = 1 000 000 Pa 
  • 1 MPa = 10 000 hPa 
  • 1 MPa = 1 000 kPa 
  • 1 MPa = 9,86923 atm 
  • 1 MPa = 145,038 PSI 
  • 1 MPa = 101 971,621 mmH2O 
  • 1 MPa = 4018.65 inH2O 
  • 1 MPa = 7500,62 torr 
  • 1 MPa = 7500.62 mmHg
  • 1 MPa = 295.3 inHg 
  • 1 MPa = 20 885,5 PSF 
  • 1 MPa = 10.1972 at
Megapascal (MPa) pressure unit converter to other pressure units

When are megapascals used to measure pressure?

Megapascals are used to measure pressure primarily when very high pressures are involved.  The following are some examples of the uses of this unit:

  • Materials engineering and mechanics - MPa are crucial when testing materials and their properties, such as tensile, compressive and flexural strength. Therefore, the unit finds application in testing steel, concrete, ceramics, polymers, etc. 
  • Civil and structural engineering - In the design of building structures, bridges, dams and other large structures, MPa helps engineers determine what loads materials can withstand.
  • Automotive and aerospace - In these sectors, MPa are used to test the strength of components such as engines, aircraft wings and car bodies. 
  • Geology and geophysics - In geology, MPa is used to determine the pressure in the Earth's depths, which is crucial for understanding plate tectonics and volcanic processes. 
  • Hydraulic and pneumatic engineering - In hydraulic and pneumatic systems, which often operate at high pressures, MPa is used for measurement and control. 
  • Materials science and nanotechnology - In these fields, MPa is used to study the properties of advanced materials, including nanostructured materials and composites.

What is the atmosphere (atm)?

The atmosphere is a unit of pressure that was originally defined as the pressure exerted by a column of mercury 760 millimetres high at 0 degrees Celsius at normal Earth acceleration.  Its designation for the pressure unit of the atmosphere is atm.

One atm corresponds to the atmospheric pressure on Earth at sea level and is equivalent to 101 325 pascals (Pa) in the SI system.

Conversion of pressure unit atmosphere (atm)

  • 1 atm = 1.01325 bar 
  • 1 atm = 101 325 Pa 
  • 1 atm = 1013.25 hPa 
  • 1 atm = 101,325 kPa 
  • 1 atm = 0,101325 MPa 
  • 1 atm = 14,6959 PSI 
  • 1 atm = 10 332,274 mmH2O 
  • 1 atm = 406,782 inH2O 
  • 1 atm = 760 torr 
  • 1 atm = 760 mmHg 
  • 1 atm = 29,9213 inHg 
  • 1 atm = 2116,22 PSF 
  • 1 atm = 1,03323 at
Atmosphere (atm) pressure unit converter to other pressure units

When are atmospheres used to measure pressure?

Atmospheres are used to measure pressure less and less frequently because they have been superseded by other units. However, they sometimes appear in the following fields:

  • Meteorology - Atmospheres are used to measure atmospheric pressure. This is particularly important in climate research and weather forecasting, where changes in pressure can indicate upcoming weather changes. 
  • Diving and underwater work - In diving, the atmosphere is the key unit for determining dive depth and planning decompression time. This is important because water pressure increases by one atmosphere every 10 metres or so of depth. 
  • Aviation and aerospace - Atmosphere is used to determine cabin pressures in aircraft and spacecraft, which is crucial for the safety and comfort of crew and passengers. 
  • Engineering and design - In engineering, particularly in the design of underwater equipment, the atmosphere is used to simulate environmental conditions and test pressure resistance. 
  • Medicine - The atmosphere is used to determine pressure levels in hyperbaric chambers, which are used to treat a variety of conditions and injuries.
  • Science and research - In scientific experiments, particularly in physics and chemistry, the atmosphere is used as a reference in studies on the behaviour of gases and liquids at different pressures.

What is PSI?

PSI is a unit of pressure used mainly in the United States and other countries using the imperial measurement system. PSI measures the amount of force (in pounds) exerted per square inch of surface area.

PSI is an abbreviation for "Pounds per Square Inch", which means "pounds per square inch".

Conversion of PSI pressure unit

  • 1 PSI = 0.0689476 bar 
  • 1 PSI = 6894.76 Pa 
  • 1 PSI = 68.9476 hPa 
  • 1 PSI = 6,89476 kPa 
  • 1 PSI = 0,00689476 MPa 
  • 1 PSI = 0,068046 atm 
  • 1 PSI = 703.069 mmH2O 
  • 1 PSI = 27.6799 inH2O 
  • 1 PSI = 51.7149 torr 
  • 1 PSI = 51.7149 mmHg 
  • 1 PSI = 2.03602 inHg 
  • 1 PSI = 144 PSF 
  • 1 PSI = 0.070307 at
PSI pressure unit converter to other pressure units

When is the PSI used to measure pressure?

The PSI is used to measure pressure primarily in countries where the imperial measurement system is predominant. Applications of this unit include:

  • Automotive - PSI is the standard unit for measuring tyre pressure in car tyres. Correct tyre pressure, expressed in PSI, is crucial for driving safety, optimum rubber wear and vehicle fuel efficiency. 
  • Industry and engineering - In industry, PSI is used to monitor pressure in pipelines, tanks, air compressors and in hydraulic and pneumatic systems.
  • Sports equipment - In sports, such as bicycles, PSI is used to measure tyre pressure, which affects grip and riding performance. 
  • Tools and equipment - In pneumatic tools and pressure equipment, such as high-pressure washers, PSI is the unit used to determine the force of the device. 
  • Science and technology - Although science is more likely to use SI units, PSI is still used in some research and experiments, particularly in the US. 
  • Medicine - PSI can be used in some specialised medical applications, for example in oxygen therapy devices or certain types of medical equipment.

What is a millimetre of water column (mmH2O)?

The millimetre water column is a unit of pressure that measures the force exerted by a column of water one millimetre high per unit area at a temperature of 4°C and normal gravitational acceleration. It is the traditional unit of pressure measurement in the metric system and is mainly used for low pressures. The designation of the millimetre water column pressure unit is mmH2O.

Conversion of pressure unit millimetre of water column (mmH2O)

  • 1 mmH2O = 0.0001 bar 
  • 1 mmH2O = 9.80665 Pa 
  • 1 mmH2O = 0.0980665 hPa 
  • 1 mmH2O = 0,00980665 kPa
  • 1 mmH2O = 0.00000980665 MPa 
  • 1 mmH2O = 0,000096784 atm 
  • 1 mmH2O = 0,00142233 PSI 
  • 1 mmH2O = 0,0393701 inH2O 
  • 1 mmH2O = 0,0735559 torr 
  • 1 mmH2O = 0,0735559 mmHg 
  • 1 mmH2O = 0,0028959 inHg 
  • 1 mmH2O = 0,204816 PSF 
  • 1 mmH2O = 0,0001 at
Milimeter of water column (mmH2O) pressure unit converter to other pressure units

When is a millimetre water column used to measure pressure?

The millimetre water column is used for pressure measurements primarily when the pressure is low and the accuracy of the measurement is important. Here are the most common applications of this unit:

  • Engineering and ventilation technology - In engineering, especially in ventilation and air-conditioning systems, mmH2O is used to measure low pressure in air ducts. This is crucial for ensuring proper airflow and maintaining comfortable indoor conditions. 
  • Medicine - Lung and airway pressures are often measured using mmH2O (e.g. during pulmonary function tests). The unit is also used to monitor intracranial and intraocular pressure, which is important in the diagnosis and treatment of various conditions. 
  • Scientific research - In scientific research, especially in physics and environmental engineering, mmH2O is used for experiments requiring accurate low-pressure measurements (e.g. in water and air flow studies). 
  • Hydrology - The mmH2O unit can be used to measure water levels and hydrostatic pressure, particularly in small bodies of water or in studies related to soil moisture. 
  • HVAC (Heating, Ventilation, and Air Conditioning) industry - In the HVAC industry, mmH2O is used to measure differential pressure in heating, ventilation and air conditioning systems, which is crucial for energy efficiency and comfort.

What is an inch of water column (inH2O)?

An inch of water column is a unit of pressure used mainly in the United States, based on the imperial measurement system. It is defined as the pressure exerted by a column of water one inch (1") high at a temperature of 4°C and normal gravitational acceleration. The unit designation for an inch of water column is inH2O.

The inch of water column is traditionally used where low pressure measurements are required.

Conversion of pressure unit inch of water column (inH2O)

  • 1 inH2O = 0.00249082 bar 
  • 1 inH2O = 249.082 Pa 
  • 1 inH2O = 2.49082 hPa 
  • 1 inH2O = 0,249082 kPa 
  • 1 inH2O = 0.000249082 MPa 
  • 1 inH2O = 0,0024583 atm 
  • 1 inH2O = 0,0361263 PSI
  • 1 inH2O = 25,4 mmH2O
  • 1 inH2O = 1,86826 torr 
  • 1 inH2O = 1,86826 mmHg 
  • 1 inH2O = 0,0735559 inHg 
  • 1 inH2O = 5,20232 PSF 
  • 1 inH2O = 0,00254 at
Inch of water column (inH2O) pressure unit converter to other pressure units

When is an inch of water column used to measure pressure?

The inch of water column is used to measure pressure primarily in countries using the imperial measurement system. This unit is mainly used to measure low pressures.

These are its main applications:

  • HVAC (Heating, Ventilation, and Air Conditioning) engineering - inH2O is commonly used to measure pressure in ventilation and air conditioning systems. This is important to ensure adequate airflow and system efficiency. 
  • Medicine - inH2O is used to measure the pressure in the lungs and respiratory system, which is crucial in pulmonology research and ventilator settings. 
  • Industrial and scientific research - In industry and scientific research, especially where accurate low-pressure measurements are required, inH2O is used for experimentation and testing.

What is a torr?

A torr is a unit of pressure measurement named after the Italian physicist Evangelista Torricelli, a pioneer in the study of atmospheric pressure. One torr is defined as 1/760 of an atmosphere (atm).

In most cases, the unit torr is considered equivalent to a millimetre column of mercury (mmHg), but there is a minimal difference between the two (less than 0.000015%).

The torr is not part of the SI system, but is used in some specialised applications.

Conversion unit pressure torr

  • 1 torr = 0.00133322 bar 
  • 1 torr = 133.322 Pa 
  • 1 torr = 1,33322 hPa 
  • 1 torr = 0,133322 kPa 
  • 1 torr = 0.000133322 MPa 
  • 1 torr = 0.00131579 atm
  • 1 torr = 0,0193368 PSI 
  • 1 torr = 13,5951 mmH2O 
  • 1 torr = 0.53524 inH2O 
  • 1 torr = 1 mmHg 
  • 1 torr = 0,0393701 inHg 
  • 1 torr = 2,7845 PSF 
  • 1 torr = 0,00135951 at
Torr pressure unit converter to other pressure units

When is a torr used to measure pressure?

Torr is used to measure pressure mainly in specialised applications such as:

  • Vacuum testing - Torr is traditionally and widely used in vacuum testing, including physics and engineering. It is crucial in the semiconductor industry, research laboratories and wherever precise vacuum pressure measurements are required. 
  • Medicine - Although mmHg is more commonly used in medicine, the torr can be used to measure blood pressure and other medical applications requiring precise measurements. 
  • Meteorology - In meteorology, the torr can be used to measure atmospheric pressure, especially in older instruments and in some specialised applications. 
  • Physics and chemistry - In laboratory research, torr is used to measure pressure in experiments with gases, vacuum and under controlled pressure conditions. 
  • Aviation and aerospace - In aerospace research, torr is used in simulation and pressure measurements at altitude and space conditions.

What is a millimetre of mercury column (mmHg)?

The millimetre column of mercury is a unit of pressure that is derived from the traditional way of measuring pressure using a mercury barometer. It refers to the pressure exerted by a column of mercury one millimetre high. The unit designation for a millimetre column of mercury is mmHg.

In the past, mercury was often used because of its high density and chemical stability.

Pressure unit conversion millimetre column of mercury (mmHg)

  • 1 mmHg = 0.00133322 bar 
  • 1 mmHg = 133.322 Pa 
  • 1 mmHg = 1.33322 hPa 
  • 1 mmHg = 0.133322 kPa 
  • 1 mmHg = 0.000133322 MPa 
  • ​​1 mmHg = 0.00131579 atm 
  • 1 mmHg = 0.0193368 PSI 
  • 1 mmHg = 13.5951 mmH2O 
  • 1 mmHg = 0.53524 inH2O 
  • 1 mmHg = 1 torr 
  • 1 mmHg = 0.0393701 inHg 
  • 1 mmHg = 2,7845 PSF 
  • 1 mmHg = 0.00135951 at
Milimeter of mercury column (mmHg) pressure unit converter to other pressure units

When is a millimetre column of mercury used to measure pressure?

The millimetre column of mercury is used to measure pressure in many fields. Here are the most important ones:

  • Medicine - The best-known use of mmHg is to measure blood pressure. It is the standard unit used in sphygmomanometers, or blood pressure measuring devices. Their precision is crucial in diagnosing and monitoring health conditions such as hypertension. 
  • Physics and engineering - In physics and engineering, mmHg is used in experiments requiring precise pressure measurements, especially in near vacuum conditions. This is important in fluid dynamics research, aerodynamics and the semiconductor industry. 
  • Vacuum science - In vacuum research, especially in the context of semiconductor physics and technology, mmHg is used to measure pressure in vacuum chambers. 
  • Meteorology - Although meteorology is dominated by hectopascals, mmHg is sometimes used to measure atmospheric pressure, especially in older measuring devices. 
  • Aviation - In aviation, mmHg can be used to measure atmospheric pressure to determine flight altitude.

What is an inch of mercury column (inHg)?

An inch of mercury column is a unit of pressure used mainly in the United States and other countries using the imperial measurement system. One inch of mercury column is defined as the pressure exerted by a column of mercury one inch high at standard earth acceleration. The unit designation for an inch of mercury column is inHg.

The inch of mercury column is particularly useful in specialised applications due to its historical significance and precision of measurement.

Conversion of pressure unit inch of mercury column (inHg)

  • 1 inHg = 0.0334211 bar 
  • 1 inHg = 3386,39 Pa 
  • 1 inHg = 33,8639 hPa 
  • 1 inHg = 3,38639 kPa 
  • 1 inHg = 0,00338639 MPa 
  • 1 inHg = 0,0334211 atm 
  • 1 inHg = 0,491154 PSI 
  • 1 inHg = 345,315 mmH2O 
  • 1 inHg = 13,5951 inH2O 
  • 1 inHg = 25,4 mmHg 
  • 1 inHg = 25,4 torr 
  • 1 inHg = 70,307 PSF 
  • 1 inHg = 0,034532 at
Inch of mercury column (inHg) pressure unit converter to other pressure units

When is an inch of mercury column used to measure pressure?

The inch of mercury column is used to measure pressure primarily in countries using the imperial measurement system. The main uses of this unit are:

  • Meteorology - In the United States, inHg is the standard unit used to measure atmospheric pressure. It is crucial for weather forecasting, monitoring weather systems and climate research. 
  • Aviation - The inHg is used to calibrate altimeters and other measuring instruments in aircraft. Accurate measurements of atmospheric pressure are essential for flight safety and navigation. 
  • Medicine - Although less common than mmHg, inHg can be used in medicine, such as in certain types of medical equipment to measure pressure. 
  • Science and research - In some specialised scientific research, particularly in physics and engineering, inHg can be used to measure pressure under controlled experimental conditions.

What is the PSF?

PSF is a unit of pressure used mainly in the United States and other countries that use the imperial measurement system. PSF measures the amount of force (in pounds) exerted on an area of one square foot. PSF is an abbreviation for "Pounds per Square Foot", which means "pounds per square foot".

The PSF appears in a variety of engineering and technical applications, especially when pressure distribution measurements over larger areas are required.

Conversion of pressure unit PSF

  • 1 PSF = 0.000478803 bar 
  • 1 PSF = 47,8803 Pa 
  • 1 PSF = 0,478803 hPa 
  • 1 PSF = 0,0478803 kPa 
  • 1 PSF = 0,0000478803 MPa 
  • 1 PSF = 0,000472541 atm 
  • 1 PSF = 0,00694444 PSI 
  • 1 PSF = 4,88243 mmH2O 
  • 1 PSF = 0,192258 inH2O 
  • 1 PSF = 0,359131 torr
  • 1 PSF = 0,359131 mmHg 
  • 1 PSF = 0,0141391 inHg 
  • 1 PSF = 0,000472541 at
PSF pressure unit converter to other pressure units

When is the PSF used to measure pressure?

PSF is used to measure pressure mainly in the United States and other countries using the imperial measurement system. The most common use cases for this unit are:

  • Building and structural engineering - PSF is a key unit in calculations related to structural loads. It is used to measure the pressure exerted on various elements of buildings, such as floors, roofs or foundations, which is necessary to ensure their safety and stability. 
  • Architecture - In architectural design, PSF is used to calculate the loads caused by snow, wind and other external forces that can affect building structures. 
  • Geotechnical engineering - The PSF assists in calculating the bearing capacity of the soil and in the design of foundations. This is important to ensure the stability and safety of structures erected on a site. 
  • Aerospace engineering - The PSF is used to assess the loads acting on aircraft wings, aircraft fuselages and other surfaces exposed to aerodynamic forces.

What is the technical atmosphere (at)?

The technical atmosphere is a unit of pressure that is not part of the SI system, but is commonly used in some technical fields. One technical atmosphere is defined as the pressure equivalent to 10 metres of water column (10 mH2O), or exactly 1 kilogram of force per square centimetre (1 kgf/cm²). The technical atmosphere has its origins in traditional industry and engineering, where it was used to measure pressure in hydraulic and pneumatic systems. The unit designation for the technical atmosphere is at.

Pressure unit conversion technical atmosphere (at)

  • 1 at = 0.980665 bar 
  • 1 at = 98066.5 Pa 
  • 1 at = 980,665 hPa 
  • 1 at = 98,0665 kPa 
  • 1 at = 0,0980665 MPa 
  • 1 at = 0,967841 atm 
  • 1 at = 14,2233 PSI 
  • 1 at = 10 000 mmH2O 
  • 1 at = 393,701 inH2O 
  • 1 at = 735,559 torr 
  • 1 at = 735,559 mmHg 
  • 1 at = 28,9590 inHg 
  • 1 at = 2048,16 PSF
Technical atmosphere (at) pressure unit converter to other pressure units

When are technical atmospheres used to measure pressure?

Technical atmospheres are used to measure pressure primarily in industry and engineering. Below there are the main applications of this unit:

  • Hydraulic and pneumatic engineering - Technical atmosphere is commonly used in hydraulic and pneumatic systems, where precision in pressure measurements is essential to ensure proper operation and safety of equipment such as pumps, valves or pistons. 
  • Design of machinery and equipment - In the design of machinery, especially those operating under pressure, the technical atmosphere is used to determine the maximum working pressure and strength of materials. 
  • Materials sciences - Technical atmospheres are used in strength testing of materials and in assessing the strength of pressurised structures, such as pressure vessels or reactors. 
  • Automotive and aerospace - In these industries, technical atmospheres are used in testing and in the design of components that have to withstand high pressures, such as engines or fuel systems.
Photo of Bartosz Kułakowski - CEO of Hosetech sp. z o. o.

Articles author

Bartosz Kułakowski

CEO of Hosetech Sp. z o.o.

Bartosz Kulakowski is an industrial hoses and couplings specialist with over 10 years of experience. Bartosz has been present in the technical industry since 2013. He gained experience as a technical and commercial advisor in the sector of plastic conveyor belts, steel structures, industrial hoses, and connectors. Since 2016, he has specialized exclusively in hoses and connectors. In 2019 he opened his own business under the HOSETECH Bartosz Kulakowski brand and since July 2022 he has been the CEO of the capital company HOSETECH Sp z o. o. (LLC).

SPIS TREŚCI

Conversion of pressure units

Conversion table for pressure units

What are the pressure units?

What is a bar?

Pressure unit converter bar

When are bars used to measure pressure?

What is the pascal (Pa)?

Conversion of pressure unit pascal (Pa)

When are pascals used to measure pressure?

What is a hectopascal (hPa)?

Conversion of pressure unit hectopascal (hPa)

When are hectopascals used to measure pressure?

What is the kilopascal (kPa)?

Conversion of pressure unit kilopascal (kPa)

When are kilopascals used to measure pressure?

What is a megapascal (MPa)?

Conversion of pressure unit Megapascal (MPa)

When are megapascals used to measure pressure?

What is the atmosphere (atm)?

Conversion of pressure unit atmosphere (atm)

When are atmospheres used to measure pressure?

What is PSI?

Conversion of PSI pressure unit

When is the PSI used to measure pressure?

What is a millimetre of water column (mmH2O)?

Conversion of pressure unit millimetre of water column (mmH2O)

When is a millimetre water column used to measure pressure?

What is an inch of water column (inH2O)?

Conversion of pressure unit inch of water column (inH2O)

When is an inch of water column used to measure pressure?

What is a torr?

Conversion unit pressure torr

When is a torr used to measure pressure?

What is a millimetre of mercury column (mmHg)?

Pressure unit conversion millimetre column of mercury (mmHg)

When is a millimetre column of mercury used to measure pressure?

What is an inch of mercury column (inHg)?

Conversion of pressure unit inch of mercury column (inHg)

When is an inch of mercury column used to measure pressure?

What is the PSF?

Conversion of pressure unit PSF

When is the PSF used to measure pressure?

What is the technical atmosphere (at)?

Pressure unit conversion technical atmosphere (at)

When are technical atmospheres used to measure pressure?

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