Convert mmhg to atm
1 millimeter of mercury equals 0.0013157897 standard atmospheres. Enter a value below to convert instantly.
Multiply the number of millimeters of mercury by 0.00131578966114 to get standard atmospheres. How this is calculated
Need the other direction? Convert standard atmosphere to millimeter of mercury →
Formula
Multiply the number of millimeters of mercury by 0.00131578966114 to get standard atmospheres.
Step by step
- Start with 1 mmHg.
- Multiply by the conversion factor 0.00131578966114.
- 1 × 0.00131578966114 = 0.0013157897 atm.
Millimeters of Mercury to Standard Atmospheres conversion table
| Millimeters of Mercury (mmHg) | Standard Atmospheres (atm) |
|---|---|
| 1 | 0.0013157897 |
| 2 | 0.0026315793 |
| 5 | 0.0065789483 |
| 10 | 0.013157897 |
| 20 | 0.026315793 |
| 50 | 0.065789483 |
| 100 | 0.13157897 |
| 500 | 0.65789483 |
| 1,000 | 1.3157897 |
Convert Millimeter of Mercury to other pressure units
1 mmHg expressed in every other pressure unit on this site.
- Pascal Pa 133.32239
- Kilopascal kPa 0.13332239
- Megapascal MPa 0.00013332239
- Gigapascal GPa 1.3332239e-7
- Hectopascal hPa 1.3332239
- Decipascal dPa 1,333.2239
- Millipascal mPa 133,322.39
- Micropascal µPa 133,322,390
- Nanopascal nPa 133,322,390,000
- Picopascal pPa 133,322,390,000,000
- Femtopascal fPa 1.3332239e+17
- Attopascal aPa 1.3332239e+20
- Centipascal cPa 13,332.239
- Dekapascal daPa 13.332239
- Terapascal TPa 1.3332239e-10
- Petapascal PPa 1.3332239e-13
- Exapascal EPa 1.3332239e-16
- Newton per Square Centimeter N/cm² 0.013332239
- Newton per Square Millimeter N/mm² 0.00013332239
- Bar bar 0.0013332239
- Millibar mbar 1.3332239
- Microbar µbar 1,333.2239
- Dyne per Square Centimeter dyn/cm² 1,333.2239
- Standard Atmosphere atm 0.0013157897
- Technical Atmosphere at 0.00135951
- Torr Torr 1.0000001
- Millitorr mTorr 1,000.0001
- Pound per Square Inch psi 0.019336777
- Kip per Square Inch ksi 0.000019336777
- Pound per Square Foot psf 2.784496
- Poundal per Square Foot pdl/ft² 89.588508
- Short Ton-force per Square Foot tonf/ft² (US) 0.001392248
- Long Ton-force per Square Foot tonf/ft² (UK) 0.0012430786
- Short Ton-force per Square Inch tonf/in² (US) 0.0000096683887
- Long Ton-force per Square Inch tonf/in² (UK) 0.0000086324899
- Kilogram-force per Square Meter kgf/m² 13.5951
- Kilogram-force per Square Centimeter kgf/cm² 0.00135951
- Kilogram-force per Square Millimeter kgf/mm² 0.0000135951
- Gram-force per Square Centimeter gf/cm² 1.35951
- Millimeter of Mercury mmHg 1
- Centimeter of Mercury cmHg 0.1
- Inch of Mercury inHg 0.039370079
- Millimeter of Water mmH₂O 13.5951
- Centimeter of Water cmH₂O 1.35951
- Meter of Water mH₂O 0.0135951
- Inch of Water inH₂O 0.53524016
- Foot of Water ftH₂O 0.044605734
- Inch of Mercury (60 °F) inHg (60 °F) 0.039481288
- Inch of Water (60 °F) inH₂O (60 °F) 0.53576909
- Foot of Water (60 °F) ftH₂O (60 °F) 0.044647424
About the millimeter of mercury
The millimeter of mercury (mmHg) is a Other unit of pressure. The unit used for blood pressure readings.
About the standard atmosphere
The standard atmosphere (atm) is a Other unit of pressure.
Where this conversion is used
Converting millimeters of mercury to standard atmospheres comes up when tire inflation, weather forecasting, diving, and industrial systems.
Related conversions
Frequently asked questions
How many standard atmospheres are in a millimeter of mercury?
One millimeter of mercury equals 0.0013157897 standard atmospheres.
How do you convert millimeters of mercury to standard atmospheres?
Multiply the number of millimeters of mercury by 0.00131578966114 to get standard atmospheres.
What is 1 standard atmosphere in millimeters of mercury?
One standard atmosphere equals 759.99989 millimeters of mercury.
When would I convert millimeters of mercury to standard atmospheres?
This conversion is common when tire inflation, weather forecasting, diving, and industrial systems.
Conversion factors are based on internationally agreed unit definitions. See our methodology and sources for details on how these values are verified.