Convert bar to millibar
Here you can quickly calculate how many millibar fit in one bar.
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- 1 bar = 1000 mbar
- 1 mbar = 0.001 bar
Example: bar to millibar
- 1 bar = 1000 millibar
Bar to millibar conversion table
| bar | millibar |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 100000 |
Bar to millibar formula
To convert bar to millibar, multiply by 1000.
1 bar = 1000 mbar
Example: 1 bar = 1000 millibar
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 bar and millibar conversion quiz
Score:
0
83 bar equals 8.3e+4 millibar.
Correct answer: 83 bar = 8.3e+4 millibar.
155 millibar equals 0.232 bar.
Correct answer: 155 millibar = 0.155 bar.
6.1 bar equals 6.1e+3 millibar.
Correct answer: 6.1 bar = 6.1e+3 millibar.