Convert Atmospheres to Millimeters of Mercury
atm to mmHg · pressure conversion
What are atmospheres and millimeters of mercury?
One atmosphere is the average air pressure at sea level, defined as 101,325 Pa. Millimeters of mercury measure pressure by the height of a mercury column, used for blood pressure. For reference: car tires run around 32 psi (220 kPa), and sea-level air pressure is about 101 kPa.
How to convert atmospheres to millimeters of mercury
1 atm = 760.002 mmHg. To convert, multiply the number of atmospheres by 760.002. For example, 5 atm = 3,800.01 mmHg, and 20 atm = 15,200 mmHg. To go the other way, multiply millimeters of mercury by 0.00131579 (since 1 mmHg = 0.00131579 atm).
Atmospheres to Millimeters of Mercury conversion table
| Atmospheres (atm) | Millimeters of Mercury (mmHg) |
|---|---|
| 1 | 760.002 |
| 2 | 1,520 |
| 5 | 3,800.01 |
| 10 | 7,600.02 |
| 50 | 38,000.1 |
| 100 | 76,000.2 |
| 1,000 | 760,002 |
FAQ
What is 1 atm in mmHg?
1 atm = 760.002 mmHg. To convert any amount, multiply the number of atmospheres by 760.002.
How do I convert millimeters of mercury back to atmospheres?
Go the other way: 1 mmHg = 0.00131579 atm, so multiply millimeters of mercury by 0.00131579 to get atmospheres.
Is a atmosphere bigger than a millimeters of mercury?
Yes — 1 atm is the larger unit, equal to 760.002 mmHg.
Are these pressure conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.