Convert Inches of Mercury to Atmospheres
1 inch of mercury = 0.03342106 atmospheres. Type any value below to convert in either direction — the calculation happens in your browser.
Inches of Mercury to Atmospheres formula
Multiply the number of inches of mercury by 0.03342106 to get atmospheres.
atmospheres = inches of mercury × 0.03342106To go the other way: divide the number of atmospheres by 0.03342106, or multiply by 29.921252.
inches of mercury = atmospheres ÷ 0.03342106Inches of Mercury to Atmospheres conversion table
| Inches of Mercury | Atmospheres |
|---|---|
| 1 inHg | 0.03342106 atm |
| 2 inHg | 0.06684212 atm |
| 3 inHg | 0.1002632 atm |
| 4 inHg | 0.1336842 atm |
| 5 inHg | 0.1671053 atm |
| 6 inHg | 0.2005264 atm |
| 7 inHg | 0.2339474 atm |
| 8 inHg | 0.2673685 atm |
| 9 inHg | 0.3007895 atm |
| 10 inHg | 0.3342106 atm |
| 15 inHg | 0.5013159 atm |
| 20 inHg | 0.6684212 atm |
| 25 inHg | 0.8355265 atm |
| 30 inHg | 1.002632 atm |
| 40 inHg | 1.336842 atm |
| 50 inHg | 1.671053 atm |
| 75 inHg | 2.50658 atm |
| 100 inHg | 3.342106 atm |
| 250 inHg | 8.355265 atm |
| 500 inHg | 16.71053 atm |
| 1,000 inHg | 33.421061 atm |
Atmospheres to Inches of Mercury conversion table
| Atmospheres | Inches of Mercury |
|---|---|
| 1 atm | 29.921252 inHg |
| 2 atm | 59.842505 inHg |
| 3 atm | 89.763757 inHg |
| 4 atm | 119.68501 inHg |
| 5 atm | 149.606262 inHg |
| 6 atm | 179.527514 inHg |
| 7 atm | 209.448767 inHg |
| 8 atm | 239.370019 inHg |
| 9 atm | 269.291272 inHg |
| 10 atm | 299.212524 inHg |
About the inch of mercury
Inches of mercury are used in US aviation altimeter settings and barometric reports.
About the atmosphere
A standard atmosphere is exactly 101,325 pascals, the reference sea-level pressure.
Frequently asked questions
How many atmospheres are in a inch of mercury?
There are 0.03342106 atmospheres in one inch of mercury.
How many inches of mercury are in a atmosphere?
There are 29.921252 inches of mercury in one atmosphere.
Is this conversion exact?
The ratio between the inch of mercury and the atmosphere is fixed by definition, so the conversion is exact — the figures shown here are rounded for readability only.
What is 10 inches of mercury in atmospheres?
10 inches of mercury equals 0.3342106 atmospheres.
Related pressure conversions
- Pascals to Atmospheres
- Kilopascals to Atmospheres
- Bars to Atmospheres
- Pounds Per Square Inch to Atmospheres
- Millimeters of Mercury to Atmospheres
- Inches of Mercury to Pascals
- Inches of Mercury to Kilopascals
- Inches of Mercury to Bars
- Inches of Mercury to Pounds Per Square Inch
- Inches of Mercury to Millimeters of Mercury