About this Pressure Converter
Pressure Converter switches between common metric and imperial pressure units used in science, weather, tires, engineering and equipment specifications.
Formula or method
The entered pressure is converted to pascals as the base unit, then converted from pascals to the selected output unit.
Example
1 atmosphere is 101,325 pascals, approximately 1.01325 bar or 14.6959 PSI.
Common uses
- Convert tire or equipment pressure between PSI and bar.
- Convert laboratory or engineering values between pascals and kilopascals.
- Compare atmospheric-pressure values across common unit systems.
How to use this tool
- Enter the values or text requested by the calculator.
- Choose units or options when the tool provides them.
- Select the calculation button and review the result.
- Use the formula, example and notes on this page to check whether the result fits your situation.
Important note
Pressure values can be reported as absolute or gauge pressure in real applications. This tool converts units only and does not change the pressure reference convention.
Frequently asked questions
Does this convert gauge pressure to absolute pressure?
No. It converts the numeric unit only; gauge versus absolute reference must be handled separately.
Can I convert PSI to kPa?
Yes. Select PSI as From and Kilopascals as To.