Millimeters of mercury to Millibars converter

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

1 mmHg = 1.33322387415 mbar
1 mbar ≈ 0.750061575846 mmHg

Formula: mbar = mmHg × 1.33322387415
mmHg ≈ mbar × 0.750061575846

Definitions: 1 mmHg = 133.322387415 Pa; 1 mbar = 0.001 bar

The millimeter of mercury (mmHg) is the pressure at the base of a one-millimeter column of mercury. It is the unit of blood pressure in medicine, for example 120/80 mmHg, and is also used for some barometric and vacuum readings.

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.