mbar - Millibar Pressure Unit

Millibar is a metric unit of pressure mainly used in European countries and is derived directly from the Bar pressure unit which equals 1,000 mbar. In SI units 1 mbar equals 100 Pascals.

The Millibar is most commonly used to measure barometric pressure for meteorological purposes and low range gas pressures due to its very small value.

In recent years the mb pressure unit has been replaced by the hPa (Hectopascal) which is exactly the same value. However the millibar has been used by many people for many years so it will be a long time before its use is completely phased out if at all.

There are three common abbreviated forms used to identify Millibar pressure unit which are mb, mbar and mbr.

You can convert a milli-bar reading into a different pressure unit by multiplying it by one of the conversion factors in the table below.

Alternatively you can use our pressure converter to calculate the answer instead.

mbar Pressure Conversion Factors

0.001	bar
0.0145038	psi
1	mbar
100	N/m²
100	Pa
1	hPa
0.1	kPa
0.0001	MPa
0.00101972	kg/cm²
10.1972	mmH2O 4°C (39.2°F)
1.01972	cmH2O 4°C (39.2°F)
0.0101972	mH2O 4°C (39.2°F)
0.401463	inH2O 4°C (39.2°F)
0.0334553	ftH2O 4°C (39.2°F)
0.750062	mmHg 0°C (32°F)
0.0750062	cmHg 0°C (32°F)
0.0295300	inHg 0°C (32°F)
0.750062	Torr
750.062	mTorr
0.000986923	atm
0.00101972	at
1000	dyn/cm²
0.232060	oz/in²
750.062	µHg 0°C (32°F)
0.00000647490	tsi (uk, long)
0.00000725189	tsi (usa, short)
0.00104427	tsf (usa, short)
2.08854	psf
1.01972	g/cm²

Please note that the conversion factors above are accurate to 6 significant figures.

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Site Last Updated: 08/02/12

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