Pressure Converter — Free Online Tool
Convert pressure units online for free. Supports PSI, bar, pascal, kilopascal, atmosphere, mmHg, and torr. Instant pressure unit conversion.
About Pressure Converter
Pressure conversion is used in tyre inflation, meteorology, engineering, medicine (blood pressure in mmHg), diving, hydraulics, and scientific research. Our pressure converter supports PSI, bar, millibar, pascal, kilopascal, megapascal, standard atmospheres, millimetres of mercury (mmHg), and inches of mercury. Enter any pressure value and see all unit equivalents instantly. Includes common reference pressures like standard atmospheric pressure for context.
Frequently Asked Questions
How many PSI in one bar?
1 bar = 14.5038 PSI. Conversely, 1 PSI = 0.0689476 bar.
What is standard atmospheric pressure?
Standard atmosphere (1 atm) = 101.325 kPa = 14.696 PSI = 1.01325 bar = 760 mmHg.
What pressure units are used for tyre inflation?
PSI is standard in the USA. Bar is used in Europe. Typical car tyres are 30-35 PSI (2.0-2.4 bar).
What is mmHg used for?
mmHg is used primarily in medicine — blood pressure is measured in mmHg (e.g. 120/80 mmHg).
What is the difference between gauge pressure and absolute pressure?
Gauge pressure is relative to atmospheric pressure. Absolute pressure includes atmospheric pressure.