Convert atmosphere to inch of mercury
1 atm = 29.92125558 inHg
1 atm = 29.9 inHg
1 atm in every pressure unit
| pascal | 101,000 Pa |
| kilopascal | 101 kPa |
| megapascal | 0.101 MPa |
| bar | 1.01 bar |
| atmosphere | 1 atm |
| millimeter of mercury | 760 mmHg |
| pound per square inch | 14.7 psi |
| foot of water column | 33.9 ft H₂O |
| gigapascal | 0.000101 GPa |
| kip per square inch | 0.0147 ksi |
| inch of mercury | 29.9 inHg |
| inch of water column | 407 in w.g. |
How the conversion works
Multiply by 29.92125558 to go from atmosphere 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 atmosphere — 1 inHg = 0.03342105739 atm.
atmosphere to inch of mercury — common values
| 1 atm | 29.921256 inHg |
| 2 atm | 59.842511 inHg |
| 3 atm | 89.763767 inHg |
| 5 atm | 149.60628 inHg |
| 10 atm | 299.21256 inHg |
| 15 atm | 448.81883 inHg |
| 20 atm | 598.42511 inHg |
| 25 atm | 748.03139 inHg |
| 50 atm | 1,496.0628 inHg |
| 75 atm | 2,244.0942 inHg |
| 100 atm | 2,992.1256 inHg |
| 250 atm | 7,480.3139 inHg |
| 500 atm | 14,960.628 inHg |
| 1000 atm | 29,921.256 inHg |
Other pressure conversions
Pa → inHgkPa → inHgMPa → inHgbar → inHgatm → Paatm → kPaatm → MPaatm → bar