mbar

Units & Measurements abbreviation · Engineering Unit

mbar
Stands forMillibar
CategoriesUnits & Measurements

mbar stands for Millibar, an engineering unit abbreviation.

One thousandth of a bar, equal to one hectopascal, the traditional unit of atmospheric pressure on weather maps. Gas appliance pressures in the UK and Europe are also set in mbar.

Example: UK gas boilers need a working inlet pressure of about 20 mbar.

Usage notes

Many meteorologists now say hectopascals, but the numbers are identical, so a 980 mbar low is a 980 hPa low. Vacuum pumps and leak testers also read in mbar. US weather reports give pressure in inches of mercury instead.

More engineering unit abbreviations

  • lbf – Pound-force
  • lm – Lumen
  • lx – Lux
  • m/s – Meters per second
  • mA – Milliampere
  • mAh – Milliampere-hour
  • MBH – Thousand BTU per hour
  • Mcf – Thousand cubic feet
  • MFD – Microfarad
  • MHz – Megahertz
  • MJ – Megajoule
  • MMBtu – Million British thermal units

See all 103 engineering unit abbreviations →

Edited by the AbbreviationList.com team. Spotted an error or a missing meaning? Contact us.