Inches of mercury to standard atmospheres converter
Standard atmospheres (atm)
1 inch of mercury = 0.03342106094 standard atmospheres
How to convert inches of mercury to standard atmospheres
atm = inHg × 0.0334210609425
Multiply the number of inches of mercury by 0.0334210609425 to get standard atmospheres. Going the other way, divide by 0.0334210609425 (or multiply by 29.9212524019).
One inch of mercury is exactly defined as 0.0334210609425 standard atmospheres (to 12 significant figures), and one standard atmosphere is 29.9212524019 inches of mercury.
Worked examples
- Convert 5 inches of mercury: 5 × 0.0334210609425 = 0.1671053047 0.1671053047 standard atmospheres.
- Convert 12.5 inches of mercury: 12.5 × 0.0334210609425 = 0.4177632618 0.4177632618 standard atmospheres.
- Convert 250 inches of mercury: 250 × 0.0334210609425 = 8.355265236 8.355265236 standard atmospheres.
Quick-reference table
| inHg | atm |
|---|---|
| 1 | 0.03342106094 |
| 2 | 0.06684212189 |
| 3 | 0.1002631828 |
| 5 | 0.1671053047 |
| 10 | 0.3342106094 |
| 15 | 0.5013159141 |
| 20 | 0.6684212189 |
| 25 | 0.8355265236 |
| 50 | 1.671053047 |
| 75 | 2.506579571 |
| 100 | 3.342106094 |
| 1,000 | 33.42106094 |
| atm | inHg |
|---|---|
| 1 | 29.9212524 |
| 2 | 59.8425048 |
| 3 | 89.76375721 |
| 5 | 149.606262 |
| 10 | 299.212524 |
| 15 | 448.818786 |
| 20 | 598.425048 |
| 25 | 748.03131 |
| 50 | 1,496.06262 |
| 75 | 2,244.09393 |
| 100 | 2,992.12524 |
| 1,000 | 29,921.2524 |
Related conversions
- ⇄ Standard atmospheres to inches of mercury
- Inches of mercury to kilopascals
- Inches of mercury to bar
- Inches of mercury to pounds per square inch
- Pascals to standard atmospheres
- Hectopascals to standard atmospheres
- Kilopascals to standard atmospheres
- Bar to standard atmospheres
- Millibars to standard atmospheres
Frequently asked questions
How many standard atmospheres are in 1 inch of mercury?
1 inch of mercury equals 0.03342106094 standard atmospheres.
What is the formula to convert inches of mercury to standard atmospheres?
Use atm = inHg × 0.0334210609425. Multiply the number of inches of mercury by 0.0334210609425 to get standard atmospheres. Going the other way, divide by 0.0334210609425 (or multiply by 29.9212524019).
What is 100 inches of mercury in standard atmospheres?
100 inches of mercury is 3.342106094 standard atmospheres.