Pressure Converter
Convert between pascals, kilopascals, bar, atmospheres, PSI, mmHg and torr.
How to Use the Pressure Converter
Convert between pascals, kilopascals, bar, atmospheres, PSI, mmHg and torr.
- Select the "From" unit — choose the pressure unit you want to convert from.
- Enter a value — type any number into the input field. Results update in real time.
- Select the "To" unit — choose the target pressure unit.
- Swap if needed — click the swap button to reverse the conversion direction.
- Copy the result — click Copy to send the value to your clipboard.
All conversions use standard physical conversion factors and run entirely in your browser.
Frequently Asked Questions
What is standard atmospheric pressure?
1 atmosphere (atm) = 101,325 Pa = 101.325 kPa = 1.01325 bar = 14.696 PSI = 760 mmHg. This is the average pressure at sea level.
What is PSI used for?
PSI (pounds per square inch) is commonly used in the US for tire pressure, air compressors, hydraulic systems and industrial applications. Standard car tire pressure is typically 30-35 PSI.
What is the difference between mmHg and torr?
They are nearly identical. 1 torr = exactly 1/760 of an atmosphere = 133.322 Pa. 1 mmHg = 133.322 Pa at standard gravity. The difference is negligible for most practical purposes.
What is a bar?
1 bar = 100,000 Pa = about 0.987 atm = about 14.504 PSI. It is commonly used in meteorology (millibar/hectopascal) and industrial applications in Europe.
How do I convert tire pressure from PSI to bar?
Divide PSI by 14.504 to get bar. For example, 32 PSI ÷ 14.504 = 2.21 bar. A quick rule: multiply PSI by 0.069 for an approximate bar value.
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