Inches of mercury to Atmospheres Converter
Convert inches of mercury (inHg) to atmospheres (atm) instantly. Pressure conversions are used for tyre pressure (psi or bar), blood pressure readings in mmHg and weather maps in millibars.
Result
- Atmospheres
- 0.033421 atm
How to use the inches of mercury to atmospheres converter
- Enter the inches of mercury (inHg).
- The results update as you type, or press Calculate.
- Read the atmospheres first, then the supporting figures below it.
Formula
Atmospheres = inches of mercury × 0.0334210609
Worked example
For example, with these inputs:
- Inches of mercury (inHg): 1
the calculator returns:
- Atmospheres: 0.033421 atm
Inches of mercury to Atmospheres table
| Inches of mercury | Atmospheres |
|---|---|
| 1 inHg | 0.033421 atm |
| 2 inHg | 0.066842 atm |
| 5 inHg | 0.167105 atm |
| 10 inHg | 0.334211 atm |
| 20 inHg | 0.668421 atm |
| 25 inHg | 0.835527 atm |
| 50 inHg | 1.6711 atm |
| 100 inHg | 3.3421 atm |
| 250 inHg | 8.3553 atm |
| 500 inHg | 16.7105 atm |
| 1,000 inHg | 33.4211 atm |
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.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
Frequently asked questions
How many atmospheres are in one inches of mercury?
1 inHg = 0.033421 atm.
How do I convert inHg to atm?
Atmospheres = inches of mercury × 0.0334210609.