Convert mmHg to atm
Millimeters of mercury to standard atmospheres. Enter a value to convert, or use the mmHg to atm chart further down the page.
1 millimeter of mercury equals 0.001315789661 standard atmospheres. Going the other way, 1 standard atmosphere = 759.9998917 millimeters of mercury.
How to convert mmHg to atm
To convert millimeters of mercury to standard atmospheres, multiply the millimeter of mercury value by 0.001315789661. You can also divide by 759.9998917 to get the same answer.
atm = mmHg × 0.001315789661
Worked example
Convert 15 mmHg to standard atmospheres:
15 mmHg = 0.01973684492 atm
mmHg to atm conversion chart
Use this mmHg to atm table for quick reference without typing anything.
| millimeters of mercury (mmHg) | standard atmospheres (atm) |
|---|---|
| 0.01 mmHg | 0.00001315789661 atm |
| 0.1 mmHg | 0.0001315789661 atm |
| 1 mmHg | 0.001315789661 atm |
| 2 mmHg | 0.002631579322 atm |
| 3 mmHg | 0.003947368983 atm |
| 5 mmHg | 0.006578948306 atm |
| 10 mmHg | 0.01315789661 atm |
| 20 mmHg | 0.02631579322 atm |
| 50 mmHg | 0.06578948306 atm |
| 100 mmHg | 0.1315789661 atm |
| 1,000 mmHg | 1.315789661 atm |
What is a millimeter of mercury?
A millimeter of mercury is about 133.32 pascals. It is the unit used for blood pressure readings.
What is a standard atmosphere?
The standard atmosphere is defined as exactly 101,325 pascals — the reference sea-level pressure.
Frequently asked questions
How many atm are in a millimeter of mercury?
1 mmHg equals 0.001315789661 atm. Going the other way, 1 atm is 759.9998917 mmHg.
How do you convert mmHg to atm?
To convert millimeters of mercury to standard atmospheres, multiply the millimeter of mercury value by 0.001315789661. You can also divide by 759.9998917 to get the same answer.
What is 10 mmHg in atm?
10 mmHg equals 0.01315789661 atm. The conversion chart on this page lists the other values people look up most often.
Related pressure conversions
Convert mmHg to other units
- atm to mmHg
- mmHg to psi
- mmHg to bar
- mmHg to pascals
- mmHg to kPa
- mmHg to torr
- mmHg to millibars
- mmHg to inHg
Convert other units to atm
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