How to use the Pressure Converter
- Enter a value in the “From” box
- Choose the units to convert from and to (or tap a quick unit)
- Read the result instantly; the table below shows the value in every unit
About this tool
The pascal (Pa) is the SI unit: one newton per square meter. Bar (100,000 Pa) is close to atmospheric pressure, and standard atmosphere is 101,325 Pa = 1.01325 bar = 14.696 psi. Weather maps use millibars (hPa). Blood pressure uses mmHg. US tire gauges read psi, and they show gauge pressure, which is the pressure above the surrounding air.
Frequently asked questions
How many psi is 1 bar?
14.5038 psi.
What is normal atmospheric pressure?
1 atm = 101.325 kPa = 1013.25 mbar = 14.696 psi = 760 mmHg = 29.92 inHg.
Are mbar and hPa the same?
Yes. 1 millibar = 1 hectopascal = 100 Pa.
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