Supported units
Convert between pascal (Pa), kilopascal (kPa), bar, millibar (mbar), atmosphere (atm), pound per square inch (psi), pound per square foot (psf), torr, millimeter of mercury (mmHg), and inches of water (inH2O). Exact relationships are used, including 1 atm = 101325 Pa and 1 psi = 6894.757 Pa.
Popular pairs
- Pa <-> psi
- bar <-> psi
- kPa <-> psi
- atm <-> kPa
- mmHg <-> torr
How to use
Pick your from/to units using the search boxes, enter a value, and the result updates instantly. Use the copy button to grab the output.
Related converters
Pressure Converter FAQ
Are the conversions exact?
Yes. We use exact constants such as 1 atm = 101325 Pa and 1 psi = 6894.757 Pa for consistent results.
Can I convert between gauge and absolute pressure?
You can convert any value; remember to account for ambient pressure if you need gauge vs absolute. Standard sea-level ambient is about 101.325 kPa (1 atm).
Does this handle torr, mmHg, and inH2O?
Yes. Torr, millimeters of mercury, and inches of water are supported with the appropriate column-height relationships.