Milimetre of mercury column (mmHg) - Pressure Unit - Definition, Application, Conversions

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.

Millimetre of mercury is rarely used in the industrial hose sector but is commonly applied in medicine and laboratory research. In the industry, hoses operate under pressures higher than those measured in mmHg. For industrial hose selection, working pressures are usually expressed in bars or PSI.

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.

How to measure pressure in millimeters of mercury?

To measure pressure in millimeters of mercury (mmHg), you should use the appropriate measuring equipment, such as a mercury manometer or an electronic manometer that can read in this unit.

Here are the steps to take to measure pressure in millimeters of mercury (mmHg):

1. Choose the right manometer - Traditionally, the most common way to measure in mmHg was a mercury manometer, which measures atmospheric pressure directly or in closed systems. However, nowadays you can also use a digital manometer that can read in mmHg.
2. Identify the measuring point - Depending on the application, determine where you want to measure the pressure (e.g. in a barometer for atmospheric pressure, in vacuum systems or medical systems).
3. Connect the manometer - If you are using a traditional mercury manometer, make sure that the mercury tube is vertical and the pressure is acting on the mercury column. A digital manometer is easier to use because after connecting the device to the measuring point, you can read the result directly on the display.
4. Read the result - On a mercury manometer, the mercury level in the glass tube indicates the pressure in mmHg. In turn, a digital manometer will show the result in mmHg units on the display.

If you have a device that measures pressure in other pressure units, you can convert the pressure to millimeters of mercury using the appropriate pressure converters.

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 Tr
• 1 mmHg = 0,0393701 inHg
• 1 mmHg = 2,7845 PSF
• 1 mmHg = 0,00135951 at
  

1 millimetre of mercury column (mmHg) = 0,00133322 bar = 133,322 Pa = 1,33322 hPa = 0,133322 kPa = 0,000133322 MPa = 0,00131579 atm = 0,0193368 PSI = 13,5951 mmH2O = 0,53524 inH2O = 1 Tr = 0,0393701 inHg = 2,7845 PSF = 0,00135951 at

mmHg to Bar - Milimetre of mercury column to Bar pressure unit conversion

To convert pressure from Milimetre of mercury column (mmHg) to Bar multiply the pressure in Milimetre of mercury column (mmHg) by 0,00133322.

• 1 mmHg to bar? 1 mmHg is equal to 0,0013332 bar
• 2 mmHg to bar? 2 mmHg is equal to 0,0026664 bar
• 5 mmHg to bar? 5 mmHg is equal to 0,0066661 bar
• 10 mmHg to bar? 10 mmHg is equal to 0,0133322 bar
• 20 mmHg to bar? 20 mmHg is equal to 0,0266644 bar
• 50 mmHg to bar? 50 mmHg is equal to 0,066661 bar
• 100 mmHg to bar? 100 mmHg is equal to 0,133322 bar
• 200 mmHg to bar? 200 mmHg is equal to 0,266644 bar
• 500 mmHg to bar? 500 mmHg is equal to 0,66661 bar
• 1000 mmHg to bar? 1000 mmHg is equal to 1,33322 bar

mmHg to Pa - Milimetre of mercury column to Pascal pressure unit conversion

To convert pressure from Milimetre of mercury column (mmHg) to Pascal (Pa) multiply the pressure in Milimetre of mercury column (mmHg) by 133,322.

• 1 mmHg to Pa? 1 mmHg is equal to 133,322 Pa
• 2 mmHg to Pa? 2 mmHg is equal to 266,644 Pa
• 5 mmHg to Pa? 5 mmHg is equal to 666,61 Pa
• 10 mmHg to Pa? 10 mmHg is equal to 1333,22 Pa
• 20 mmHg to Pa? 20 mmHg is equal to 2666,44 Pa
• 50 mmHg to Pa? 50 mmHg is equal to 6666,1 Pa
• 60 mmHg to Pa? 60 mmHg is equal to 7999,32 Pa
• 100 mmHg to Pa? 100 mmHg is equal to 13332,2 Pa
• 120 mmHg to Pa? 120 mmHg is equal to 15998,64 Pa
• 200 mmHg to Pa? 200 mmHg is equal to 26664,4 Pa
• 500 mmHg to Pa? 500 mmHg is equal to 66661 Pa
• 740 mmHg to Pa? 740 mmHg is equal to 98658,28 Pa
• 750 mmHg to Pa? 750 mmHg is equal to 99991,5 Pa
• 760 mmHg to Pa? 760 mmHg is equal to 101324,72 Pa
• 1000 mmHg to Pa? 1000 mmHg is equal to 133322 Pa

mmHg to hPa - Milimetre of mercury column to Hectopascal pressure unit conversion

To convert pressure from Milimetre of mercury column (mmHg) to Hectopascal (hPa) multiply the pressure in Milimetre of mercury column (mmHg) by 1,33322.

• 1 mmHg to hPa? 1 mmHg is equal to 1,33322 hPa
• 2 mmHg to hPa? 2 mmHg is equal to 2,66644 hPa
• 5 mmHg to hPa? 5 mmHg is equal to 6,6661 hPa
• 10 mmHg to hPa? 10 mmHg is equal to 13,3322 hPa
• 20 mmHg to hPa? 20 mmHg is equal to 26,6644 hPa
• 50 mmHg to hPa? 50 mmHg is equal to 66,661 hPa
• 100 mmHg to hPa? 100 mmHg is equal to 133,322 hPa
• 200 mmHg to hPa? 200 mmHg is equal to 266,644 hPa
• 500 mmHg to hPa? 500 mmHg is equal to 666,61 hPa
• 740 mmHg to hPa? 740 mmHg is equal to 986,5828 hPa
• 750 mmHg to hPa? 750 mmHg is equal to 999,915 hPa
• 760 mmHg to hPa? 760 mmHg is equal to 1013,2472 hPa
• 1000 mmHg to hPa? 1000 mmHg is equal to 1333,22 hPa

mmHg to kPa - Milimetre of mercury column to Kilopascal pressure unit conversion

To convert pressure from Milimetre of mercury column (mmHg) to Kilopascal (kPa) multiply the pressure in Milimetre of mercury column (mmHg) by 0,133322.

• 1 mmHg to kPa? 1 mmHg is equal to 0,133322 kPa
• 2 mmHg to kPa? 2 mmHg is equal to 0,266644 kPa
• 5 mmHg to kPa? 5 mmHg is equal to 0,66661 kPa
• 10 mmHg to kPa? 10 mmHg is equal to 1,33322 kPa
• 20 mmHg to kPa? 20 mmHg is equal to 2,66644 kPa
• 50 mmHg to kPa? 50 mmHg is equal to 6,6661 kPa
• 60 mmHg to kPa? 60 mmHg is equal to 7,99932 kPa
• 100 mmHg to kPa? 100 mmHg is equal to 13,3322 kPa
• 120 mmHg to kPa? 120 mmHg is equal to 15,99864 kPa
• 200 mmHg to kPa? 200 mmHg is equal to 26,6644 kPa
• 500 mmHg to kPa? 500 mmHg is equal to 66,661 kPa
• 1000 mmHg to kPa? 1000 mmHg is equal to 133,322 kPa

mmHg to MPa - Milimetre of mercury column to Megapascal pressure unit conversion

To convert pressure from Milimetre of mercury column (mmHg) to Megapascal (MPa) multiply the pressure in Milimetre of mercury column (mmHg) by 0,000133322.

• 1 mmHg to MPa? 1 mmHg is equal to 0,0001333 MPa
• 2 mmHg to MPa? 2 mmHg is equal to 0,0002666 MPa
• 5 mmHg to MPa? 5 mmHg is equal to 0,0006666 MPa
• 10 mmHg to MPa? 10 mmHg is equal to 0,0013332 MPa
• 20 mmHg to MPa? 20 mmHg is equal to 0,0026664 MPa
• 50 mmHg to MPa? 50 mmHg is equal to 0,0066661 MPa
• 100 mmHg to MPa? 100 mmHg is equal to 0,0133322 MPa
• 200 mmHg to MPa? 200 mmHg is equal to 0,0266644 MPa
• 500 mmHg to MPa? 500 mmHg is equal to 0,066661 MPa
• 1000 mmHg to MPa? 1000 mmHg is equal to 0,133322 MPa

mmHg to atm - Milimetre of mercury column to Atmosphere pressure unit conversion

To convert pressure from Milimetre of mercury column (mmHg) to Atmosphere (atm) multiply the pressure in Milimetre of mercury column (mmHg) by 0,00131579.

• 1 mmHg to atm? 1 mmHg is equal to 0,001316 atm
• 2 mmHg to atm? 2 mmHg is equal to 0,002632 atm
• 5 mmHg to atm? 5 mmHg is equal to 0,006579 atm
• 10 mmHg to atm? 10 mmHg is equal to 0,013158 atm
• 18 mmHg to atm? 18 mmHg is equal to 0,023684 atm
• 20 mmHg to atm? 20 mmHg is equal to 0,026316 atm
• 50 mmHg to atm? 50 mmHg is equal to 0,06579 atm
• 100 mmHg to atm? 100 mmHg is equal to 0,131579 atm
• 100 mmHg to atm? 100 mmHg is equal to 0,131579 atm
• 125 mmHg to atm? 125 mmHg is equal to 0,164474 atm
• 200 mmHg to atm? 200 mmHg is equal to 0,263158 atm
• 235 mmHg to atm? 235 mmHg is equal to 0,309211 atm
• 250 mmHg to atm? 250 mmHg is equal to 0,328948 atm
• 320 mmHg to atm? 320 mmHg is equal to 0,421053 atm
• 500 mmHg to atm? 500 mmHg is equal to 0,657895 atm
• 500 mmHg to atm? 500 mmHg is equal to 0,657895 atm
• 550 mmHg to atm? 550 mmHg is equal to 0,723685 atm
• 560 mmHg to atm? 560 mmHg is equal to 0,736842 atm
• 580 mmHg to atm? 580 mmHg is equal to 0,763158 atm
• 650 mmHg to atm? 650 mmHg is equal to 0,855264 atm
• 700 mmHg to atm? 700 mmHg is equal to 0,921053 atm
• 730 mmHg to atm? 730 mmHg is equal to 0,960527 atm
• 733 mmHg to atm? 733 mmHg is equal to 0,964474 atm
• 735 mmHg to atm? 735 mmHg is equal to 0,967106 atm
• 738 mmHg to atm? 738 mmHg is equal to 0,971053 atm
• 740 mmHg to atm? 740 mmHg is equal to 0,973685 atm
• 741 mmHg to atm? 741 mmHg is equal to 0,975 atm
• 742 mmHg to atm? 742 mmHg is equal to 0,976316 atm
• 743 mmHg to atm? 743 mmHg is equal to 0,977632 atm
• 745 mmHg to atm? 745 mmHg is equal to 0,980264 atm
• 746 mmHg to atm? 746 mmHg is equal to 0,981579 atm
• 748 mmHg to atm? 748 mmHg is equal to 0,984211 atm
• 750 mmHg to atm? 750 mmHg is equal to 0,986843 atm
• 752 mmHg to atm? 752 mmHg is equal to 0,989474 atm
• 753 mmHg to atm? 753 mmHg is equal to 0,99079 atm
• 754 mmHg to atm? 754 mmHg is equal to 0,992106 atm
• 755 mmHg to atm? 755 mmHg is equal to 0,993421 atm
• 760 mmHg to atm? 760 mmHg is equal to 1 atm
• 765 mmHg to atm? 765 mmHg is equal to 1,006579 atm
• 770 mmHg to atm? 770 mmHg is equal to 1,013158 atm
• 790 mmHg to atm? 790 mmHg is equal to 1,039474 atm
• 800 mmHg to atm? 800 mmHg is equal to 1,052632 atm
• 912 mmHg to atm? 912 mmHg is equal to 1,2 atm
• 950 mmHg to atm? 950 mmHg is equal to 1,250001 atm
• 1000 mmHg to atm? 1000 mmHg is equal to 1,31579 atm
• 1520 mmHg to atm? 1520 mmHg is equal to 2 atm

mmHg to PSI - Milimetre of mercury column to PSI pressure unit conversion

To convert pressure from Milimetre of mercury column (mmHg) to PSI multiply the pressure in Milimetre of mercury column (mmHg) by 0,0193368.

• 1 mmHg to PSI? 1 mmHg is equal to 0,019337 PSI
• 2 mmHg to PSI? 2 mmHg is equal to 0,038674 PSI
• 5 mmHg to PSI? 5 mmHg is equal to 0,096684 PSI
• 10 mmHg to PSI? 10 mmHg is equal to 0,193368 PSI
• 20 mmHg to PSI? 20 mmHg is equal to 0,386736 PSI
• 50 mmHg to PSI? 50 mmHg is equal to 0,96684 PSI
• 100 mmHg to PSI? 100 mmHg is equal to 1,93368 PSI
• 200 mmHg to PSI? 200 mmHg is equal to 3,86736 PSI
• 500 mmHg to PSI? 500 mmHg is equal to 9,6684 PSI
• 1000 mmHg to PSI? 1000 mmHg is equal to 19,3368 PSI

mmHg to mmH2O - Milimetre of mercury column to Milimetre of water column pressure unit conversion

To convert pressure from Milimetre of mercury column (mmHg) to Milimetre of water column (mmH2O) multiply the pressure in Milimetre of mercury column (mmHg) by 13,5951.

• 1 mmHg to mmH2O? 1 mmHg is equal to 13,5951 mmH2O
• 2 mmHg to mmH2O? 2 mmHg is equal to 27,1902 mmH2O
• 5 mmHg to mmH2O? 5 mmHg is equal to 67,9755 mmH2O
• 10 mmHg to mmH2O? 10 mmHg is equal to 135,951 mmH2O
• 20 mmHg to mmH2O? 20 mmHg is equal to 271,902 mmH2O
• 50 mmHg to mmH2O? 50 mmHg is equal to 679,755 mmH2O
• 100 mmHg to mmH2O? 100 mmHg is equal to 1359,51 mmH2O
• 200 mmHg to mmH2O? 200 mmHg is equal to 2719,02 mmH2O
• 500 mmHg to mmH2O? 500 mmHg is equal to 6797,55 mmH2O
• 1000 mmHg to mmH2O? 1000 mmHg is equal to 13595,1 mmH2O

mmHg to inH2O - Milimetre of mercury column to Inch of water column pressure unit conversion

To convert pressure from Milimetre of mercury column (mmHg) to Inch of water column (inH2O) multiply the pressure in Milimetre of mercury column (mmHg) by 0,53524.

• 1 mmHg to inH2O? 1 mmHg is equal to 0,53524 inH2O
• 2 mmHg to inH2O? 2 mmHg is equal to 1,07048 inH2O
• 5 mmHg to inH2O? 5 mmHg is equal to 2,6762 inH2O
• 10 mmHg to inH2O? 10 mmHg is equal to 5,3524 inH2O
• 20 mmHg to inH2O? 20 mmHg is equal to 10,7048 inH2O
• 50 mmHg to inH2O? 50 mmHg is equal to 26,762 inH2O
• 100 mmHg to inH2O? 100 mmHg is equal to 53,524 inH2O
• 200 mmHg to inH2O? 200 mmHg is equal to 107,048 inH2O
• 500 mmHg to inH2O? 500 mmHg is equal to 267,62 inH2O
• 1000 mmHg to inH2O? 1000 mmHg is equal to 535,24 inH2O

mmHg to torr - Milimetre of mercury column to torr pressure unit conversion

To convert pressure from Milimetre of mercury column (mmHg) to torr (Tr) multiply the pressure in Milimetre of mercury column (mmHg) by 1.

• 1 mmHg to torr? 1 mmHg is equal to 1 torr
• 2 mmHg to torr? 2 mmHg is equal to 2 torr
• 5 mmHg to torr? 5 mmHg is equal to 5 torr
• 10 mmHg to torr? 10 mmHg is equal to 10 torr
• 20 mmHg to torr? 20 mmHg is equal to 20 torr
• 50 mmHg to torr? 50 mmHg is equal to 50 torr
• 100 mmHg to torr? 100 mmHg is equal to 100 torr
• 200 mmHg to torr? 200 mmHg is equal to 200 torr
• 235 mmHg to torr? 235 mmHg is equal to 235 torr
• 500 mmHg to torr? 500 mmHg is equal to 500 torr
• 760 mmHg to torr? 760 mmHg is equal to 760 torr
• 1000 mmHg to torr? 1000 mmHg is equal to 1000 torr

mmHg to inHg - Milimetre of mercury column to Inch of mercury column pressure unit conversion

To convert pressure from Milimetre of mercury column (mmHg) to Inch of mercury column (inHg) multiply the pressure in Milimetre of mercury column (mmHg) by 0,0393701.

• 1 mmHg to inHg? 1 mmHg is equal to 0,03937 inHg
• 2 mmHg to inHg? 2 mmHg is equal to 0,07874 inHg
• 5 mmHg to inHg? 5 mmHg is equal to 0,196851 inHg
• 10 mmHg to inHg? 10 mmHg is equal to 0,393701 inHg
• 20 mmHg to inHg? 20 mmHg is equal to 0,787402 inHg
• 50 mmHg to inHg? 50 mmHg is equal to 1,968505 inHg
• 100 mmHg to inHg? 100 mmHg is equal to 3,93701 inHg
• 200 mmHg to inHg? 200 mmHg is equal to 7,87402 inHg
• 500 mmHg to inHg? 500 mmHg is equal to 19,68505 inHg
• 1000 mmHg to inHg? 1000 mmHg is equal to 39,3701 inHg

mmHg to PSF - Milimetre of mercury column to PSF pressure unit conversion

To convert pressure from Milimetre of mercury column (mmHg) to PSF multiply the pressure in Milimetre of mercury column (mmHg) by 2,7845.

• 1 mmHg to PSF? 1 mmHg is equal to 2,7845 PSF
• 2 mmHg to PSF? 2 mmHg is equal to 5,569 PSF
• 5 mmHg to PSF? 5 mmHg is equal to 13,9225 PSF
• 10 mmHg to PSF? 10 mmHg is equal to 27,845 PSF
• 20 mmHg to PSF? 20 mmHg is equal to 55,69 PSF
• 50 mmHg to PSF? 50 mmHg is equal to 139,225 PSF
• 100 mmHg to PSF? 100 mmHg is equal to 278,45 PSF
• 200 mmHg to PSF? 200 mmHg is equal to 556,9 PSF
• 500 mmHg to PSF? 500 mmHg is equal to 1392,25 PSF
• 1000 mmHg to PSF? 1000 mmHg is equal to 2784,5 PSF

mmHg to at - Milimetre of mercury column to Technical atmosphere pressure unit conversion

To convert pressure from Milimetre of mercury column (mmHg) to Technical Atmosphere (at) multiply the pressure in Milimetre of mercury column (mmHg) by 0,00135951.

• 1 mmHg to at? 1 mmHg is equal to 0,00136 at
• 2 mmHg to at? 2 mmHg is equal to 0,002719 at
• 5 mmHg to at? 5 mmHg is equal to 0,006798 at
• 10 mmHg to at? 10 mmHg is equal to 0,013595 at
• 20 mmHg to at? 20 mmHg is equal to 0,02719 at
• 50 mmHg to at? 50 mmHg is equal to 0,067976 at
• 100 mmHg to at? 100 mmHg is equal to 0,135951 at
• 200 mmHg to at? 200 mmHg is equal to 0,271902 at
• 500 mmHg to at? 500 mmHg is equal to 0,679755 at
• 1000 mmHg to at? 1000 mmHg is equal to 1,35951 at