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.
Millimeter Mercury (0°C) to Standard Atmosphere
Convert millimeter mercury (0°c) to standard atmosphere instantly. Type in either field — results update live.
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Pressure Millimeter Mercury (0°C) Standard Atmosphere
1 millimeter mercury (0°c) = 0.0013157897 standard atmospheres
Unit
Unit
Conversion table
Selected mmHg values converted to atm using the exact factor from this tool.
| mmHg | atm |
|---|---|
| 0.01 | 0.0000131579 |
| 0.1 | 0.000131579 |
| 1 | 0.0013157897 |
| 2 | 0.0026315793 |
| 3 | 0.003947369 |
| 5 | 0.0065789483 |
| 10 | 0.0131578966 |
| 20 | 0.0263157932 |
| 50 | 0.0657894831 |
| 100 | 0.1315789661 |
| 1,000 | 1.3157896611 |
How to convert
Exact conversion factors in both directions, plus a worked example.
1 mmHg = 0.0013157897 atm
1 atm = 759.9998917256 mmHg
To convert millimeter mercury (0°c) to standard atmosphere, multiply by 0.0013157897.
To convert standard atmosphere to millimeter mercury (0°c), multiply by 759.9998917256.
Example: convert 10 mmHg to atm
10 × 0.0013157897 = 0.0131578966 atm
About these units
Short background on the units used in this conversion.
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.
Frequently asked questions
How many standard atmospheres are in one millimeter mercury (0°c)?
One millimeter mercury (0°c) equals 0.0013157897 standard atmospheres. Multiply your millimeters of mercury value by 0.0013157897 to convert to standard atmospheres.
What is the conversion formula?
atm = mmHg × 0.0013157897The reverse is
mmHg = atm × 759.9998917256, using the same exact factors as this converter.Is this Millimeter Mercury (0°C) to Standard Atmosphere converter private?
Yes. All calculations run locally in your browser. Nothing you type is sent to a server.
All millimeter mercury (0°c) conversions
Jump to any pressure conversion starting from millimeter mercury (0°c) — including the reverse direction and every other unit in our dataset.
standard atmosphere (atm) → millimeter mercury (0°c) (mmHg)
millimeter mercury (0°c) (mmHg) → pascal (Pa)millimeter mercury (0°c) (mmHg) → kilopascal (kPa)millimeter mercury (0°c) (mmHg) → megapascal (MPa)millimeter mercury (0°c) (mmHg) → barmillimeter mercury (0°c) (mmHg) → pound per square inch (psi) (psi)millimeter mercury (0°c) (mmHg) → hectopascal (hPa)millimeter mercury (0°c) (mmHg) → millibar (mbar)millimeter mercury (0°c) (mmHg) → torrmillimeter mercury (0°c) (mmHg) → newton per square meter (N/m²)millimeter mercury (0°c) (mmHg) → kip per square inch (ksi) (ksi)millimeter mercury (0°c) (mmHg) → exapascal (EPa)millimeter mercury (0°c) (mmHg) → petapascal (PPa)millimeter mercury (0°c) (mmHg) → terapascal (TPa)millimeter mercury (0°c) (mmHg) → gigapascal (GPa)millimeter mercury (0°c) (mmHg) → dekapascal (daPa)millimeter mercury (0°c) (mmHg) → decipascal (dPa)millimeter mercury (0°c) (mmHg) → centipascal (cPa)millimeter mercury (0°c) (mmHg) → millipascal (mPa)millimeter mercury (0°c) (mmHg) → micropascal (µPa)millimeter mercury (0°c) (mmHg) → nanopascal (nPa)millimeter mercury (0°c) (mmHg) → picopascal (pPa)millimeter mercury (0°c) (mmHg) → femtopascal (fPa)millimeter mercury (0°c) (mmHg) → attopascal (aPa)millimeter mercury (0°c) (mmHg) → newton per square centimeter (N/cm²)millimeter mercury (0°c) (mmHg) → newton per square millimeter (N/mm²)millimeter mercury (0°c) (mmHg) → kilonewton per square meter (kN/m²)millimeter mercury (0°c) (mmHg) → microbar (µbar)millimeter mercury (0°c) (mmHg) → dyne per square centimeter (dyn/cm²)millimeter mercury (0°c) (mmHg) → kilogram-force per square meter (kgf/m²)millimeter mercury (0°c) (mmHg) → kilogram-force per square centimeter (kgf/cm²)millimeter mercury (0°c) (mmHg) → kilogram-force per square millimeter (kgf/mm²)millimeter mercury (0°c) (mmHg) → gram-force per square centimeter (gf/cm²)millimeter mercury (0°c) (mmHg) → ton-force (short) per square foot (tonf/ft²)millimeter mercury (0°c) (mmHg) → ton-force (short) per square inch (tonf/in²)millimeter mercury (0°c) (mmHg) → ton-force (long) per square foot (long tonf/ft²)millimeter mercury (0°c) (mmHg) → ton-force (long) per square inch (long tonf/in²)millimeter mercury (0°c) (mmHg) → kip-force per square inch (kip/in²)millimeter mercury (0°c) (mmHg) → pound-force per square foot (lbf/ft²)millimeter mercury (0°c) (mmHg) → pound-force per square inch (lbf/in²)millimeter mercury (0°c) (mmHg) → poundal per square foot (pdl/ft²)millimeter mercury (0°c) (mmHg) → centimeter mercury (0°c) (cmHg)millimeter mercury (0°c) (mmHg) → inch mercury (32°f) (inHg)millimeter mercury (0°c) (mmHg) → inch mercury (60°f) (inHg)millimeter mercury (0°c) (mmHg) → centimeter water (4°c) (cmH₂O)millimeter mercury (0°c) (mmHg) → millimeter water (4°c) (mmH₂O)millimeter mercury (0°c) (mmHg) → inch water (4°c) (inAq)millimeter mercury (0°c) (mmHg) → foot water (4°c) (ftAq)millimeter mercury (0°c) (mmHg) → inch water (60°f) (inAq)millimeter mercury (0°c) (mmHg) → foot water (60°f) (ftAq)millimeter mercury (0°c) (mmHg) → atmosphere technical (at)