Atmospheres to Inches of mercury Converter
Convert atmospheres (atm) to inches of mercury (inHg) instantly. Pressure conversions are used for tyre pressure (psi or bar), blood pressure readings in mmHg and weather maps in millibars.
Result
- Inches of mercury
- 29.9213 inHg
How to use the atmospheres to inches of mercury converter
- Enter the atmospheres (atm).
- The results update as you type, or press Calculate.
- Read the inches of mercury first, then the supporting figures below it.
Formula
Inches of mercury = atmospheres × 29.9212524019
Worked example
For example, with these inputs:
- Atmospheres (atm): 1
the calculator returns:
- Inches of mercury: 29.9213 inHg
Atmospheres to Inches of mercury table
| Atmospheres | Inches of mercury |
|---|---|
| 1 atm | 29.9213 inHg |
| 2 atm | 59.8425 inHg |
| 5 atm | 149.6063 inHg |
| 10 atm | 299.2125 inHg |
| 20 atm | 598.425 inHg |
| 25 atm | 748.0313 inHg |
| 50 atm | 1,496.06 inHg |
| 100 atm | 2,992.13 inHg |
| 250 atm | 7,480.31 inHg |
| 500 atm | 14,960.63 inHg |
| 1,000 atm | 29,921.25 inHg |
About this conversion
Pressure conversions are used for tyre pressure (psi or bar), blood pressure readings in mmHg and weather maps in millibars.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Frequently asked questions
How many inches of mercury are in one atmosphere?
1 atm = 29.9213 inHg.
How do I convert atm to inHg?
Inches of mercury = atmospheres × 29.9212524019.