Pounds per Square Inch (psi)

Modern equivalent

6,894.76 Pascals

The common imperial pressure unit for everyday applications like car tyres.

Psi remains widely understood by the general public for measuring pneumatic pressures, boiler ratings, and tyre inflation levels.

We use a small number of essential cookies to remember your theme preference and your recent conversions. Those are always on, because the site cannot work without them.

We would also like to use Google Analytics to understand which pages people find useful. That is entirely optional, and declining changes nothing about how the site works for you. Read the cookie policy.