atmospheres to inches of mercury
Convert atmosphere to inch of mercury — instant, free, with the formula shown.
How to convert atmosphere to inch of mercury
To convert atmosphere to inch of mercury, multiply by 29.9212524:
For example, 10 atm × 29.921252 = 299.212524 inHg.
atm to inHg conversion table
| atmospheres (atm) | inches of mercury (inHg) |
|---|---|
| 1 atm | 29.921252 inHg |
| 2 atm | 59.842505 inHg |
| 5 atm | 149.606262 inHg |
| 10 atm | 299.212524 inHg |
| 25 atm | 748.03131 inHg |
| 50 atm | 1496.06262 inHg |
| 100 atm | 2992.12524 inHg |
| 250 atm | 7480.3131 inHg |
| 500 atm | 14960.626201 inHg |
| 1000 atm | 29921.252402 inHg |
Other atmosphere conversions
Convert to inch of mercury from another unit
atm to inHg — frequently asked
How many inches of mercury are in 1 atmosphere?
1 atmosphere = 29.921252 inches of mercury (atm × 29.921252 = inHg).
What is the formula to convert atmosphere to inch of mercury?
Multiply your atmosphere value by 29.9212524 to get inch of mercury.
How do I convert 10 atmospheres to inches of mercury?
10 atm = 299.212524 inHg. For 100 atm the answer is 2992.12524 inHg. Use the calculator on this page for any other value.
When to convert atmosphere to inch of mercury
Pressure conversion — common questions
What's the difference between bar and psi?
1 bar = 100,000 Pa ≈ 14.504 psi. Bar is metric/SI-friendly; psi is US imperial. Tire pressure in cars is commonly 30–35 psi or ≈ 2.1–2.4 bar.
Is 1 atmosphere the same as 1 bar?
Very close but not identical. 1 atm = 1.01325 bar = 101,325 Pa. 1 bar = 100,000 Pa.
Why is blood pressure in mmHg?
Historically measured with mercury manometers — the pressure that supports a column of mercury that many millimetres tall. 120 mmHg systolic ≈ 16 kPa.