Unit conversion
Pressure Converter
Convert pressure between pascals, kilopascals, bar, psi, standard atmospheres, and torr.
Convert a value
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Keep the pressure reference unchanged
Unit conversion does not change gauge pressure into absolute pressure. A gauge reading remains gauge pressure after conversion, and an absolute reading remains absolute.
One standard atmosphere is defined as 101,325 pascals; local atmospheric pressure varies. Torr uses 1/760 of a standard atmosphere and is not labeled as an exact millimeter of mercury.
Example
1 standard atmosphere = 101.325 kPa.
Precision and input limits
Results use browser floating-point arithmetic and are rounded to your selected number of significant digits, not decimal places. Small or large results may use scientific notation. This is not an arbitrary-precision calculator.
Enter zero or a number with magnitude from 1e-100 to 1e100. Signed values are supported for mathematical conversions. Swap units exchanges the unit choices without changing your input. Editing an input clears the previous result.