Millibars to Pounds per Square Inch Converter

To convert a measurement in millibars to pounds per square inch, multiply the value by 0.014503773773. The conversion factor comes from the relationship between both units and the pascal.

For example, to convert 5 mbar to pounds per square inch: 5 × 0.014503773773 = 0.072518868865 psi.

A millibar equals one thousandth of a bar, or 100 pascals, and is equivalent to the hectopascal used in modern meteorology. The millibar dominated weather reporting for much of the 20th century. It is numerically identical to the hectopascal (hPa) that officially replaced it, so 1013 mbar and 1013 hPa describe the same sea-level pressure.

Common uses of millibars include: Atmospheric pressure in weather forecasts; Barometer and altimeter readings; Aviation weather reporting; Storm and hurricane intensity tracking.

Pounds per square inch (psi) is an imperial unit of pressure equal to the force of one pound-force applied to an area of one square inch, or about 6,894.76 pascals. Rooted in the imperial system, psi remains the dominant pressure unit in the United States. It appears on tire gauges, air compressors, and hydraulic equipment throughout North America.

Common uses of pounds per square inch include: Tire pressure in the United States; Air compressors and pneumatic tools; Hydraulic system ratings; Plumbing and water pressure specifications.

Here are some common values converted:

1 mbar = 0.014503773773 psi 5 mbar = 0.072518868865 psi 10 mbar = 0.14503773773 psi 50 mbar = 0.725188688651 psi 100 mbar = 1.450377 psi