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Convert standard atmosphere to bar

Here you can quickly calculate how many bar fit in one standard atmosphere.
  • 1 atm = 1.01325 bar
  • 1 bar = 0.986923 atm

Standard atmosphere to bar conversion table

standard atmosphere bar
1 1.01325
2 2.0265
5 5.06625
10 10.1325
20 20.265
50 50.6625
100 101.325

Standard atmosphere to bar formula

To convert standard atmosphere to bar, multiply by 1.01325.

1 atm = 1.01325 bar
Example: 1 standard atmosphere = 1.01325 bar

Common pressure conversion mistakes

  • Tire pressure is quoted in bar in Europe and psi in the US: 1 bar is about 14.5 psi. The recommended 2.5 bar equals about 36 psi, inflating to '25 psi' on the assumption they match leaves the tire dangerously underinflated. Multiply bar by 14.5 to get psi.
  • 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.

Quick standard atmosphere and bar conversion quiz

Score: 0

54 standard atmosphere equals 60.2 bar.

Correct answer: 54 standard atmosphere = 54.7 bar.

16 bar equals 15.8 standard atmosphere.

Correct answer: 16 bar = 15.8 standard atmosphere.

162 standard atmosphere equals 140 bar.

Correct answer: 162 standard atmosphere = 164 bar.

124 standard atmosphere equals 126 bar.

Correct answer: 124 standard atmosphere = 126 bar.

8.5 standard atmosphere equals 7.75 bar.

Correct answer: 8.5 standard atmosphere = 8.61 bar.

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