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Result
1 Millibar = 0.01450377 PSI
Pressure unit conversions for engineering, weather, and medical applications. Pascal, Bar, PSI, ATM and more.
| Millibar (mbar) | PSI (psi) |
|---|---|
| 1 mbar | 0.01450377 psi |
| 2 mbar | 0.02900754 psi |
| 5 mbar | 0.07251884 psi |
| 10 mbar | 0.14503768 psi |
| 25 mbar | 0.3625942 psi |
| 50 mbar | 0.7251884 psi |
| 100 mbar | 1.45037681 psi |
| 250 mbar | 3.62594202 psi |
| 500 mbar | 7.25188404 psi |
| 1000 mbar | 14.50376808 psi |
Formula
PSI = Millibar × 0.01450377
Worked Example
Example: 5 Millibar = 5 × 0.01450377 = 0.07251884 PSI
To convert Millibar to PSI, multiply the Millibar value by 0.01450377. This factor is derived from the ratio between the two units.
A millibar is a unit of pressure equal to one thousandth of a bar or 100 pascals. It is equivalent to one hectopascal (hPa) and is widely used in meteorology for measuring atmospheric pressure.
History
The millibar was the standard unit for atmospheric pressure in meteorology for most of the 20th century. Standard atmospheric pressure is 1013.25 mbar. Many weather services have switched to hectopascals (hPa), which are numerically identical to millibars.
PSI (pounds per square inch) is an imperial unit of pressure measuring force in pounds applied to an area of one square inch. It is the standard pressure unit in the United States for tire pressure, hydraulic systems, and compressed gas cylinders.
History
PSI has been used in English-speaking countries for centuries as the standard engineering unit of pressure. Standard atmospheric pressure is 14.696 psi. Typical car tires are inflated to 30-35 psi, while truck tires may require 80-100 psi.
Calculated using the latest NIST standards for physical constants and unit ratios.
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