Convert pound/square inch [gauge] to millimeter of mercury [0 °C]


psig
mmhg

The above form works if you are measuring differential pressure, such as the difference in psi between two points.

If you are measuring relative to vacuum and want to resolve the pressure relative to the atmosphere, then you should use the form below.

Note that psig can measure differential pressure in some applications and absolute pressure in others, so you need to know which one fits your calculation.

psig (relative to atmosphere)
mmhg (relative to vacuum)



More information from the unit converter

How many psig in 1 mmhg? The answer is 0.019336777871316. We assume you are converting between pound/square inch [gauge] and millimeter of mercury [0 °C]. You can view more details on each measurement unit: psig or mmhg The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00014503773800722 psig, or 0.0075006156130264 mmhg. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between pounds/square inch and millimeters of mercury. Type in your own numbers in the form to convert the units!



Quick conversion chart of psig to mmhg

1 psig to mmhg = 51.71492 mmhg

2 psig to mmhg = 103.42985 mmhg

3 psig to mmhg = 155.14477 mmhg

4 psig to mmhg = 206.8597 mmhg

5 psig to mmhg = 258.57462 mmhg

6 psig to mmhg = 310.28954 mmhg

7 psig to mmhg = 362.00447 mmhg

8 psig to mmhg = 413.71939 mmhg

9 psig to mmhg = 465.43432 mmhg

10 psig to mmhg = 517.14924 mmhg


Want other units?

You can do the reverse unit conversion from mmhg to psig, or enter any two units below:

Enter two units to convert

From:
To:
 



Common pressure conversions


Definition: Pound/square inch

Psig (pound-force per square inch gauge) is a unit of pressure relative to the surrounding atmosphere. By contrast, psia measures pressure relative to a vacuum (such as that in space). At sea level, Earth's atmosphere actually exerts a pressure of 14.7 psi. Humans do not feel this pressure because internal pressure of liquid in their bodies matches the external pressure. If a pressure gauge is calibrated to read zero in space, then at sea level on Earth it would read 14.7 psi. Thus a reading of 30 psig on a tire gauge represents an absolute pressure of 44.7 psi.


Definition: Millimeter of mercury

The torr (symbol: Torr) or millimetre of mercury (mmHg) is a non-SI unit of pressure. It is the atmospheric pressure that supports a column of mercury 1 millimetre high. The unit is named after Evangelista Torricelli, Italian physicist and mathematician, for his discovery of the principle of the barometer in 1643.


Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 70 kg, 150 lbs, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!