Pressure
Convert pressure between Pascal, bar, PSI, mmHg, atmosphere and more. From tyre pressure to blood pressure and weather forecasts — all common units in one place.
Frequently asked questions
1 atmosphere equals 1.01325 bar or 101,325 Pascal. This is the average air pressure at sea level and is defined as the standard atmosphere (atm).
1013 hPa (hectopascal) represents an air pressure of 1,013 millibar, approximately equal to 1 atmosphere. It is the average air pressure at sea level and is considered neutral weather conditions.
2 bar equals 29.01 PSI (pounds per square inch). PSI is commonly used for tyre pressure, hydraulic systems and compressors in countries using imperial or customary units.
mmHg stands for millimetres of mercury and is used in medicine for blood pressure. A normal blood pressure of 120/80 mmHg means 120 millimetres of mercury (systolic) and 80 mmHg (diastolic). 1 mmHg = 133.32 Pascal.