Pressure Converter
Convert common pressure units used in engineering, weather, tires, process systems and laboratory work, including psi, bar, kilopascals, megapascals, atmospheres, millimeters of mercury and inches of mercury.
Conversions use exact defined factors where standards provide them and conventional reference factors otherwise. Round the result to the precision appropriate for your application.
How this tool works
Pressure conversion uses the pascal as the base unit. One psi is approximately 6,894.757293 pascals and one standard atmosphere is exactly 101,325 pascals.
Example
100 psi converts to about 689.476 kPa or 6.89476 bar.
Common questions
Is psi gauge the same as psi absolute?
No. The unit scale is the same, but gauge and absolute pressure use different zero references. This converter changes units only; it does not add or subtract atmospheric pressure.
How many kPa are in one psi?
One psi is approximately 6.894757 kPa.