MmHg to Atm
1 mmHg = 0.001315789661 atm
Converter Calculator
1 Millimeters of Mercury (mmHg) = 0.001316 Atmospheres (atm)
Explanation
Convert mmHg to Pa with 133.322387415, then divide by 101,325 Pa per atm.
Common Conversion Values
| Millimeters of Mercury (mmHg) | Atmospheres (atm) |
|---|---|
| 0.1 | 0.000132 |
| 0.5 | 0.000658 |
| 1 | 0.001316 |
| 5 | 0.006579 |
| 10 | 0.013158 |
| 14.7 | 0.019342 |
| 29.92 | 0.039368 |
| 100 | 0.131579 |
| 101.325 | 0.133322 |
| 1,000 | 1.31579 |
How to use this hub
- Choose a converter family.
- If converting to/from grams from a volume unit, select an ingredient.
- For pure unit changes (volume↔volume or weight↔weight), use universal conversions.
If your conversion includes grams, you’ll choose an ingredient; otherwise you won’t.
Frequently Asked Questions
What defines this conversion?
The factor is derived from exact pascal-based pressure definitions.
Is the reverse conversion available?
Yes. Use the switch button or open the Atmospheres (atm) to Millimeters of Mercury (mmHg) hub to view the mirror conversion.
Can I use decimals?
Yes. Decimal inputs are supported so fractional pressure values remain precise in calculator output.