Pressure Converter
Convert pressure between PSI, bar, pascals, atmospheres and more.
Many units for one force
Pressure is measured in a confusing spread of units depending on the field — PSI for tyres and plumbing, bar in Europe and diving, pascals in science, atmospheres for comparison to sea level, and more. This converts between them, so a figure quoted in one becomes usable in another without a formula.
Enter a pressure and see it in the other units.
Where you meet each unit
The units cluster by domain, which helps make sense of them. PSI dominates in the US and in everyday things like tyre pressures. Bar is common in Europe and roughly equals normal atmospheric pressure, which makes it intuitive. The pascal is the strict scientific unit but is tiny, so pressures are usually given in kilopascals. Weather reports use their own, and diving and industry each have favourites. Converting between them is routine whenever information crosses from one of these worlds into another.
Frequently asked questions
Where is each pressure unit used?
PSI in the US and for tyres, bar in Europe and diving, pascals in science, and atmospheres for comparison to sea-level pressure.
Why is pressure usually given in kilopascals rather than pascals?
Because the pascal is a very small unit, so practical pressures come out as large numbers, tidied by using kilopascals.
Is anything uploaded?
No. The conversion happens in your browser.