Convert pascal to inch of mercury
1 Pa = 0.000295299833 inHg
sig figs
1 Pa = 0.000295 inHg
1 Pa in every pressure unit
| microbar | 10 μbar |
| barye | 10 Ba |
| millitorr | 7.5 mTorr |
| pascal | 1 Pa |
| millimeter of water column | 0.102 mmH₂O |
| pound per square foot | 0.0209 lb/ft² |
| centimeter of water column | 0.0102 cmH₂O |
| hectopascal | 0.01 hPa |
| millibar | 0.01 mbar |
| torr | 0.0075 Torr |
| millimeter of mercury | 0.0075 mmHg |
| inch of water column | 0.00401 in w.g. |
| kilopascal | 0.001 kPa |
| foot of water column | 0.000335 ft H₂O |
| inch of mercury | 0.000295 inHg |
| pound per square inch | 0.000145 psi |
| meter of water column | 0.000102 m H₂O |
| decibar | 0.0001 dbar |
| kilogram-force per square centimeter | 0.0000102 kgf/cm² |
| bar | 0.00001 bar |
| atmosphere | 0.00000987 atm |
| megapascal | 0.000001 MPa |
| kip per square inch | 1.45e-07 ksi |
| gigapascal | 1.00e-09 GPa |
| million pounds per square inch | 1.45e-10 Mpsi |
Worth knowing
inch of mercury: Engine vacuum and vacuum-system readings in inHg are usually measured downward from atmosphere, so "20 inches of vacuum" means about 9.9 inHg absolute, not 20. Aviation and weather use inHg absolute. Read which convention the instrument uses before converting. Full definition →
How the conversion works
Multiply by 0.000295299833 to go from pascal to inch of mercury, or divide by it to go back. Every conversion on this site routes through the SI value (Pa) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? inch of mercury to pascal: 1 inHg = 3,386.38864 Pa.
pascal to inch of mercury: common values
| 1 Pa | 0.00029529983 inHg |
| 2 Pa | 0.00059059967 inHg |
| 3 Pa | 0.0008858995 inHg |
| 5 Pa | 0.0014764992 inHg |
| 10 Pa | 0.0029529983 inHg |
| 15 Pa | 0.0044294975 inHg |
| 20 Pa | 0.0059059967 inHg |
| 25 Pa | 0.0073824958 inHg |
| 50 Pa | 0.014764992 inHg |
| 75 Pa | 0.022147487 inHg |
| 100 Pa | 0.029529983 inHg |
| 250 Pa | 0.073824958 inHg |
| 500 Pa | 0.14764992 inHg |
| 1000 Pa | 0.29529983 inHg |