Millibar (mbar)
Definition
Exactly 100 pascals (one hectopascal), one thousandth of a bar — the weather-pressure unit.
History
The millibar is one thousandth of a bar, defined as exactly 100 pascals. It became the standard unit in meteorology, where it equals the hectopascal now often used in its place.
Where it is used
Millibars, or the identical hectopascals, report barometric pressure in weather forecasts and aviation.
Typical uses include weather and barometric pressure, aviation.
Conversion pages
These pages convert millibar to or from another unit in pressure.
No conversion pages use this unit yet.