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

kgf/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

33863.9

Dynes/cm²

7.85847

oz/in²

25400.0

µHg 0°C

0.000219265

tfsi (UK)

0.000245577

tfsi (USA)

0.0353631

tfsf (USA)

70.7262

psf (USA)

34.5315

gf/cm²



Home > Pressure-measurement-glossary >

Request Info | Ask a Question

Site Last Updated:  12/03/10

Tools
Pressure Conversion



Converts to


Temperature Conversion



Converts to


IP Ratings Explained

I P

First Digit (Solids)
No protection

Second Digit (Liquids)
No protection

Reference

Glossary - Find explanations for terminology used in specifying and using pressure instruments

Pressure Conversion - Look up conversion factors or select a conversion table for a particular pressure unit

Pressure Measuring Guide - Collection of guidance notes for sourcing, setting up and using pressure measurement equipment

News Articles - Archive of application notes, product releases and technical information

Specify

Pressure Sensor Specification - Select parameters with PSAT to generate a spec for your own use or to submit as an enquiry

Product Finder - Choose multiple product and application types to filter out a suitable product

Contact

Help:  Request Info

         Ask a Question

Articles
Subscribe

©2010 SensorsONE Ltd, All Rights Reserved.