Convert hectopascal to bar
Here you can quickly calculate how many bar fit in one hectopascal.
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- 1 hPa = 0.001 bar
- 1 bar = 1000 hPa
Example: hectopascal to bar
- 1 hectopascal = 0.001 bar
Hectopascal to bar conversion table
| hectopascal | bar |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
Hectopascal to bar formula
To convert hectopascal to bar, divide by 1000.
1 hPa = 0.001 bar
Example: 1 hectopascal = 0.001 bar
Common pressure conversion mistakes
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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.
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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.
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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.
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Hectopascals and millibars are exactly the same size: 1 hPa = 1 mbar. A chart showing 1,013 mbar and one showing 1,013 hPa agree perfectly, no conversion needed. Meteorology simply renamed the unit.
Quick hectopascal and bar conversion quiz
Score:
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2.8 bar equals 2 800 hectopascal.
Correct answer: 2.8 bar = 2 800 hectopascal.
14.2 bar equals 8 520 hectopascal.
Correct answer: 14.2 bar = 14 200 hectopascal.
151 bar equals 90 600 hectopascal.
Correct answer: 151 bar = 151 000 hectopascal.