The millibar conversion selector selects the pressure/stress measurement unit to convert to starting from millibars (mbar). To make a conversion starting from a unit of pressure other than millibar, simply click on the "Reset" button.
The millibar is a unit of pressure equal to 100 pascals (1 mbar = 100 Pa), the SI derived unit of pressure.
One millibar (mbar) is also equal to 1.0 hectopascal (hPa), or 0.1 kilopascals (kPa), or about 0.000986923267 atmospheres (atm), or 0.001 bars (bar), or 0.75006168 millimeters of mercury at 0 °C (mmHg), or 0.401463 inches of water at 4 °C (inH2O), or 0.01450379 pounds per square inch (psi), or 2.08854343 pounds per square foot (psf) or 0.75006168 torr (Torr).
The millibar is equal to 1,000 dynes per square centimeter (1 mbar = 1,000 dyn/cm2). The dyne (dyn) is a unit of force in the centimetre-gram-second (CGS) system of units while the square centimeter (cm2) is a unit of area in the SI.
The millibar is used by meteorologists and weather reporters worldwide for measuring atmospheric pressure.