Pressure Converter
Convert psi, bar, pascals, kilopascals, atmospheres, mmHg and inches of mercury.
About the Pressure Converter
The pascal (one newton per square metre) is the SI unit of pressure. A bar is 100,000 Pa, close to air pressure at sea level, which is defined as one standard atmosphere, 101,325 Pa.
Tyres in the US are measured in psi, weather in millibars or hectopascals (the same size), and blood pressure in millimetres of mercury.
The formula
Result = Value × (size of the “from” unit ÷ size of the “to” unit)
- 1 Pa
- 1 Pa
- 1 kPa
- 1,000 Pa
- 1 MPa
- 1,000,000 Pa
- 1 bar
- 100,000 Pa
- 1 mbar
- 100 Pa
- 1 atm
- 101,325 Pa
Every pressure unit is converted through pascal using its exact definition.
Common conversions
| From | To |
|---|---|
| 32 psi | 2.206322334 bar |
| 1 bar | 14.50377377 psi |
| 1 atm | 101.325 kPa |
| 1 atm | 14.69594878 psi |
| 120 mmHg | 15.99868649 kPa |
| 100 kPa | 14.50377377 psi |
How to read your result
- The table shows your pressure in every unit.
Worked example
Example: 35 pound per square inch = 2.413165053 bar
- Inputs: Value: 35; From: Pound per square inch (psi); To: Bar (bar).
- Formula: Result = Value × (size of the “from” unit ÷ size of the “to” unit)
- Multiply by the number of bar in one psi 35 × 0.06894757293 = 2.413165053 bar
- Result: 35 pound per square inch = 2.413165053 bar
- 1 psi = 0.06894757293 bar
- 1 bar = 14.50377377 psi
Questions people ask
How many psi is 1 bar?
About 14.5038 psi. One psi is about 0.0689 bar.
Is mmHg the same as Torr?
Nearly: 1 Torr is exactly 1/760 atm (133.3224 Pa) and 1 mmHg is 133.322387 Pa, a difference of less than one part in a million.