Standard Atmosphere (atm)
The standard atmosphere (atm) is defined as exactly 101,325 pascals — average sea-level atmospheric pressure.
Atmospheres compare scuba tank fills, describe laboratory reference pressure, and normalize gas volumes.
Standard Atmosphere to Millimeter Mercury (0°C)
Convert standard atmosphere to millimeter mercury (0°c) instantly. Type in either field — results update live.
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Pressure Standard Atmosphere Millimeter Mercury (0°C)
1 standard atmosphere = 759.9998917256 millimeters of mercury
Unit
Unit
Conversion table
Selected atm values converted to mmHg using the exact factor from this tool.
| atm | mmHg |
|---|---|
| 0.01 | 7.5999989173 |
| 0.1 | 75.9999891726 |
| 1 | 759.9998917256 |
| 2 | 1,519.9997834512 |
| 3 | 2,279.9996751768 |
| 5 | 3,799.9994586281 |
| 10 | 7,599.9989172561 |
| 20 | 15,199.9978345122 |
| 50 | 37,999.9945862806 |
| 100 | 75,999.9891725611 |
| 1,000 | 759,999.8917256112 |
How to convert
Exact conversion factors in both directions, plus a worked example.
1 atm = 759.9998917256 mmHg
1 mmHg = 0.0013157897 atm
To convert standard atmosphere to millimeter mercury (0°c), multiply by 759.9998917256.
To convert millimeter mercury (0°c) to standard atmosphere, multiply by 0.0013157897.
Example: convert 10 atm to mmHg
10 × 759.9998917256 = 7599.9989172561 mmHg
About these units
Short background on the units used in this conversion.
Millimeter Mercury (0°C) (mmHg)
Millimeters of mercury (mmHg) at 0°C express pressure as the height of a mercury column; 1 mmHg ≈ 133.322 Pa.
mmHg is standard for blood pressure cuffs, vacuum gauges, and barometric readings in medicine and labs.
Frequently asked questions
How many millimeters of mercury are in one standard atmosphere?
One standard atmosphere equals 759.9998917256 millimeters of mercury. Multiply your standard atmospheres value by 759.9998917256 to convert to millimeters of mercury.
What is the conversion formula?
mmHg = atm × 759.9998917256The reverse is
atm = mmHg × 0.0013157897, using the same exact factors as this converter.Is this Standard Atmosphere to Millimeter Mercury (0°C) converter private?
Yes. All calculations run locally in your browser. Nothing you type is sent to a server.
All standard atmosphere conversions
Jump to any pressure conversion starting from standard atmosphere — including the reverse direction and every other unit in our dataset.
millimeter mercury (0°c) (mmHg) → standard atmosphere (atm)
standard atmosphere (atm) → pascal (Pa)standard atmosphere (atm) → kilopascal (kPa)standard atmosphere (atm) → megapascal (MPa)standard atmosphere (atm) → barstandard atmosphere (atm) → pound per square inch (psi) (psi)standard atmosphere (atm) → hectopascal (hPa)standard atmosphere (atm) → millibar (mbar)standard atmosphere (atm) → torrstandard atmosphere (atm) → newton per square meter (N/m²)standard atmosphere (atm) → kip per square inch (ksi) (ksi)standard atmosphere (atm) → exapascal (EPa)standard atmosphere (atm) → petapascal (PPa)standard atmosphere (atm) → terapascal (TPa)standard atmosphere (atm) → gigapascal (GPa)standard atmosphere (atm) → dekapascal (daPa)standard atmosphere (atm) → decipascal (dPa)standard atmosphere (atm) → centipascal (cPa)standard atmosphere (atm) → millipascal (mPa)standard atmosphere (atm) → micropascal (µPa)standard atmosphere (atm) → nanopascal (nPa)standard atmosphere (atm) → picopascal (pPa)standard atmosphere (atm) → femtopascal (fPa)standard atmosphere (atm) → attopascal (aPa)standard atmosphere (atm) → newton per square centimeter (N/cm²)standard atmosphere (atm) → newton per square millimeter (N/mm²)standard atmosphere (atm) → kilonewton per square meter (kN/m²)standard atmosphere (atm) → microbar (µbar)standard atmosphere (atm) → dyne per square centimeter (dyn/cm²)standard atmosphere (atm) → kilogram-force per square meter (kgf/m²)standard atmosphere (atm) → kilogram-force per square centimeter (kgf/cm²)standard atmosphere (atm) → kilogram-force per square millimeter (kgf/mm²)standard atmosphere (atm) → gram-force per square centimeter (gf/cm²)standard atmosphere (atm) → ton-force (short) per square foot (tonf/ft²)standard atmosphere (atm) → ton-force (short) per square inch (tonf/in²)standard atmosphere (atm) → ton-force (long) per square foot (long tonf/ft²)standard atmosphere (atm) → ton-force (long) per square inch (long tonf/in²)standard atmosphere (atm) → kip-force per square inch (kip/in²)standard atmosphere (atm) → pound-force per square foot (lbf/ft²)standard atmosphere (atm) → pound-force per square inch (lbf/in²)standard atmosphere (atm) → poundal per square foot (pdl/ft²)standard atmosphere (atm) → centimeter mercury (0°c) (cmHg)standard atmosphere (atm) → inch mercury (32°f) (inHg)standard atmosphere (atm) → inch mercury (60°f) (inHg)standard atmosphere (atm) → centimeter water (4°c) (cmH₂O)standard atmosphere (atm) → millimeter water (4°c) (mmH₂O)standard atmosphere (atm) → inch water (4°c) (inAq)standard atmosphere (atm) → foot water (4°c) (ftAq)standard atmosphere (atm) → inch water (60°f) (inAq)standard atmosphere (atm) → foot water (60°f) (ftAq)standard atmosphere (atm) → atmosphere technical (at)