Millibars to Pounds per square inch converter

To convert millibars to pounds per square inch, enter the value in the first field. The result in pounds per square inch is calculated automatically using the exact conversion factor.

1 mbar ≈ 0.014503773773 psi
1 psi ≈ 68.9475729317 mbar

Formula: psi ≈ mbar × 0.014503773773
mbar ≈ psi × 68.9475729317

Definitions: 1 mbar = 0.001 bar; 1 psi = 8896443230521/1290320000 Pa

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.

The pound per square inch (psi) is the customary United States unit of pressure, one pound-force per square inch. It is used for tire pressure, air compressors and water and gas pressure in the United States, and for tires in the United Kingdom too.

See the conversion table with commonly used values, handy for quick reference or study.