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Convert millimeter of mercury to standard atmosphere

Here you can quickly calculate how many standard atmosphere fit in one millimeter of mercury.
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  • 1 mmHg = 0.001316 atm
  • 1 atm = 759.999892 mmHg

Example: millimeter of mercury to standard atmosphere

  • 1 millimeter of mercury = 0.001316 standard atmosphere

Millimeter of mercury to standard atmosphere conversion table

millimeter of mercury standard atmosphere
1 0.001316
2 0.002632
5 0.006579
10 0.013158
20 0.026316
50 0.065789
100 0.131579

Millimeter of mercury to standard atmosphere formula

To convert millimeter of mercury to standard atmosphere, multiply by 0.001316.

1 mmHg = 0.001316 atm
Example: 1 millimeter of mercury = 0.001316 standard atmosphere

Common pressure conversion mistakes

  • One atmosphere is not exactly one bar: 1 atm = 1.01325 bar = 101.325 kPa. There is also the technical atmosphere (1 kgf/cm²) at about 0.981 bar. The ~1% differences rarely matter day to day, but engineering and diving calculations need the right unit.
  • Blood pressure uses mmHg (120/80) and weather reports use hPa (around 1,013), different units that must not be mixed: 760 mmHg = 1,013.25 hPa. One mmHg is about 1.33 hPa.

Quick millimeter of mercury and standard atmosphere conversion quiz

Score: 0

17 millimeter of mercury equals 0.0447 standard atmosphere.

Correct answer: 17 millimeter of mercury = 0.0224 standard atmosphere.

9.8 standard atmosphere equals 11 200 millimeter of mercury.

Correct answer: 9.8 standard atmosphere = 7 450 millimeter of mercury.

3 millimeter of mercury equals 0.00197 standard atmosphere.

Correct answer: 3 millimeter of mercury = 0.00395 standard atmosphere.

38 millimeter of mercury equals 0.03 standard atmosphere.

Correct answer: 38 millimeter of mercury = 0.05 standard atmosphere.

24.9 millimeter of mercury equals 0.0328 standard atmosphere.

Correct answer: 24.9 millimeter of mercury = 0.0328 standard atmosphere.

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