Pressure Converter
Convert bar, PSI, pascal, atm, mmHg and other pressure units
Pascal as the common base
The converter first changes the source value to pascals, then into the target unit. Reference factors include 1 bar = 100,000 Pa, 1 atm = 101,325 Pa, and 1 psi = 6,894.757293168 Pa.
Where pressure units are used
Bar and kilopascals are common in engineering, PSI appears in many English-language specifications, and mmHg is used in selected medical or vacuum contexts. Conversion changes the unit, not measurement accuracy.
Example: bar to PSI
Select bar as the source and psi as the target. A value of 2.5 bar converts to about 36.2594 psi. Swap reverses the selected units.
Absolute and gauge pressure remain different concepts
The calculator knows only value and unit. It cannot determine whether a measurement is absolute or relative to ambient pressure. Do not add or subtract one atmosphere without knowing the measurement reference.