inHg - Inches of Mercury at 0 degrees C

Inch of Mercury is a British and American unit of measure for pressure. 1 inch of Mercury at 0 degrees Celsius (32 deg F) equals 3386.39 Pascals. An inch of mercury at zero degrees Celsius is defined as the pressure exerted by a column of mercury with a density of 13,595.08 kg/m3 under the pull of gravity at 9.80665 m/s2.

The inHg pressure unit is not used so extensively in the UK anymore and has been mostly replaced by the metric units mmHg and mbar. However, inches of Mercury are still used extensively in the USA particularly for meteorological purposes when measuring atmospheric pressure.

Mercury has a very high density which made it a very practical liquid for use inside fluid filled columns for measuring pressure in the laboratory. However Mercury is now considered a hazardous substance and mercury manometers have been almost totally eliminated from laboratories for health and safety reasons.

Use the following conversion factors to convert from inHg to other pressure units or vica versa. To convert a reading in inHg to another unit multiply it by the relevant pressure conversion factor. To convert a reading in any pressure unit to inHg divide it by the relevant pressure conversion factor.

Alternatively convert from a inHg pressure value into another unit using the pressure unit converter.

inHg Pressure Conversion Factors

0.0338639	bar
0.491154	psi
33.8639	mbar
3386.39	N/m²
3386.39	Pa
33.8639	hPa
3.38639	kPa
0.00338639	MPa
0.0345315	kg/cm²
345.315	mmH2O 4°C (39.2°F)
34.5315	cmH2O 4°C (39.2°F)
0.345315	mH2O 4°C (39.2°F)
13.5951	inH2O 4°C (39.2°F)
1.13292	ftH2O 4°C (39.2°F)
25.4000	mmHg 0°C (32°F)
2.54000	cmHg 0°C (32°F)
1	inHg 0°C (32°F)
25.4000	Torr
25400	mTorr
0.0334211	atm
0.0345315	at
33863.9	dyn/cm²
7.85847	oz/in²
25400.0	µHg 0°C (32°F)
0.000219265	tsi (uk, long)
0.000245577	tsi (usa, short)
0.0353631	tsf (usa, short)
70.7262	psf
34.5315	g/cm²

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Site Last Updated: 03/09/10

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