Atmosphere to Inch of Mercury Converter
EngineeringPascals, bar, psi and more.
How to convert Atmosphere to Inch of Mercury
Multiply the atmosphere value by 29.9212: 1 atm = 29.9212 inHg. Going the other way, 1 inHg = 0.0334211 atm, so divide by 29.9212 or use the Inch of Mercury to Atmosphere converter.
About these units
Atmosphere (atm)
A standard atmosphere is defined as exactly 101,325 pascals, roughly the average air pressure at sea level. It is about 14.7 psi or 1.013 bar.
Inch of Mercury (inHg)
An inch of mercury is about 3,386 pascals. US weather reports and aircraft altimeters give barometric pressure in inHg, typically near 29.92.
Atmosphere to Inch of Mercury conversion table
| Atmosphere (atm) | Inch of Mercury (inHg) |
|---|---|
| 1 atm | 29.9212 inHg |
| 2 atm | 59.8425 inHg |
| 3 atm | 89.7637 inHg |
| 4 atm | 119.685 inHg |
| 5 atm | 149.606 inHg |
| 10 atm | 299.212 inHg |
| 20 atm | 598.425 inHg |
| 25 atm | 748.031 inHg |
| 50 atm | 1,496.06 inHg |
| 100 atm | 2,992.12 inHg |
| 500 atm | 14,960.6 inHg |
| 1,000 atm | 29,921.2 inHg |