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Pressure

Common, useful unit conversions for science and everyday measurement.

Pa → kPa› Pa → bar› Pa → atm› Pa → psi› kPa → Pa› kPa → bar› kPa → atm› kPa → psi› bar → Pa› bar → kPa› bar → atm› bar → psi› atm → Pa› atm → kPa› atm → bar› atm → psi› psi → Pa› psi → kPa› psi → bar› psi → atm›
Mendeleev · Guide

Understand it before converting

Pressure is not just a classroom quantity: it appears constantly in weather, tyres, diving, hydraulics, industrial processes and laboratories. Units are chosen for practical reasons. Some are convenient in everyday life, while others dominate scientific or technical work. This page deliberately focuses on familiar units — pascals, kilopascals, bar, atmospheres and psi — instead of presenting a long catalogue of rarely used formats. Every pair links to a dedicated conversion page with the calculation rule, worked examples and useful reference values. The aim is to get the answer quickly while still understanding what is being converted and whether the result makes physical sense.