Pressure Converter

The most common pressure conversion is bar to psi. One bar equals approximately 14.5038 psi. This conversion is used for tyre pressures, where European vehicles use bar and US vehicles use psi.

To convert psi to bar, multiply by 0.0689476. For example, 32 psi (a typical car tyre pressure) equals approximately 2.21 bar. This conversion is common when inflating tyres with a gauge calibrated in different units.

1 standard atmosphere (atm) equals 101325 pascals (Pa) or 101.325 kPa. This is the average air pressure at sea level and is used as a reference point in chemistry and physics experiments.

Blood pressure is measured in millimeters of mercury (mmHg) because early blood pressure devices used mercury columns to measure pressure. Normal blood pressure is around 120/80 mmHg, which equals approximately 16 kPa systolic. The unit remains standard in medicine despite mercury instruments being replaced.

To convert bar to pascal, multiply by 100000. So 1 bar equals 100000 Pa or 100 kPa. Bar is widely used in industrial settings, weather forecasting and compressed gas systems because it is close to 1 atmosphere and easy to work with.