Pressure Converter
Convert bar, PSI, Pascal, kilopascals, atmospheres and other pressure units quickly and accurately.
How is it calculated?
How does pressure conversion work?
Pressure measures force per unit area. ConvertAll uses the Pascal (Pa), the SI unit of pressure, as its reference unit. Each value is converted into Pascals and then into the selected destination unit using conversion factors. One bar equals exactly 100,000 Pa, while one standard atmosphere equals 101,325 Pa. PSI is commonly used for tire pressure and industrial applications. Units based on mercury or water columns use conventional reference values.
Conversion examples
- 1 bar = exactly 100,000 Pa.
- 1 bar = exactly 100 kPa.
- 1 bar = approximately 14.5038 psi.
- 1 psi = approximately 6.89476 kPa.
- 1 standard atmosphere = exactly 101,325 Pa.
- 1 standard atmosphere = exactly 1013.25 hPa.
- 1 standard atmosphere = exactly 760 Torr.
- 1 MPa = exactly 10 bar.
Frequently asked questions
How do you convert bar to PSI?
Multiply the value in bar by approximately 14.5037738. For example, 2 bar equals approximately 29.0075 psi.
How do you convert PSI to bar?
Divide the value in PSI by approximately 14.5037738. For example, 30 psi equals approximately 2.06843 bar.
How many Pascals are in one bar?
One bar equals exactly 100,000 Pascals, or 100 kilopascals.
What is the difference between bar and atmosphere?
One bar equals 100,000 Pa, while one standard atmosphere equals 101,325 Pa. One atmosphere is exactly 1.01325 bar.
What does PSI mean?
PSI stands for pound-force per square inch. It is a pressure unit commonly used for tires, compressors and industrial systems.
How many PSI is 2.5 bar?
2.5 bar equals approximately 36.2594 psi.
What is the difference between Torr and mmHg?
The Torr is defined as exactly 1/760 of a standard atmosphere. The conventional millimeter of mercury uses a slightly different conversion factor, so the two units are nearly equal but not mathematically identical.
What is a hectopascal used for?
The hectopascal (hPa) is commonly used in meteorology to measure atmospheric pressure. One hectopascal equals exactly 100 Pa and is equivalent to one millibar.
Does this converter distinguish absolute and gauge pressure?
No. This converter changes pressure units without changing the measurement reference. Converting gauge pressure to absolute pressure requires knowing the reference atmospheric pressure.