Bars to Millibars converter

To convert bars to millibars, enter the value in the first field. The result in millibars is calculated automatically using the exact conversion factor.

1 bar = 1000 mbar
1 mbar = 0.001 bar

Formula: mbar = bar × 1000
bar = mbar × 0.001

Definitions: 1 bar = 100000 Pa; 1 mbar = 0.001 bar

The bar equals exactly 100,000 pascals, which is very close to atmospheric pressure at sea level. It is used for tire and gas pressure in Europe, for scuba tanks (water adds about one bar per 10 meters of depth), and in hydraulics and boilers.

The millibar (mbar) is one thousandth of a bar and equals exactly one hectopascal. It is the traditional unit for atmospheric pressure in meteorology and aviation, and it is common for vacuum pressures.

See the conversion table with commonly used values, handy for quick reference or study.