Mmhg to Atm ConverterRight in Your Browser
Convert millimeters of mercury (mmHg) to standard atmospheres (atm). The millimeter of mercury (mmHg) survives from mercury barometers — still the unit of blood pressure and vacuum work. The standard atmosphere (atm) is defined as exactly 101,325 Pa — average air pressure at sea level. Everything is calculated locally in your browser — no server, and it works offline.
0.00131579 atm
in standard atmospheres (standard atmosphere)
To convert millimeters of mercury to standard atmospheres, multiply the millimeter of mercury value by 0.00131579.
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| Millimeters of mercury (mmHg) | Standard atmospheres (atm) |
|---|---|
| 1 | 0.00131579 |
| 2 | 0.00263158 |
| 3 | 0.00394737 |
| 4 | 0.00526316 |
| 5 | 0.00657895 |
| 10 | 0.0131579 |
| 20 | 0.0263158 |
| 50 | 0.0657895 |
| 100 | 0.131579 |
Frequently Asked Questions
How many standard atmospheres are in a millimeter of mercury?
One millimeter of mercury equals 0.00131579 standard atmospheres (1 mmHg = 0.00131579 atm). So to go from millimeters of mercury to standard atmospheres, multiply the millimeter of mercury value by 0.00131579.
What is the formula to convert millimeters of mercury to standard atmospheres?
To convert millimeters of mercury to standard atmospheres, multiply the millimeter of mercury value by 0.00131579. For example, 10 mmHg is 0.0131579 atm.
What is 120 millimeters of mercury in standard atmospheres?
120 millimeters of mercury — a healthy systolic blood pressure — is 0.157895 standard atmospheres. The converter above works for any value, entirely in your browser.
Is the millimeter of mercury to standard atmosphere conversion exact?
The factor used here is the defined value: 1 mmHg = 0.001315789661 atm. Results are rounded to six significant digits for readability, so for high-precision work use the full factor.
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