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โ† Unit definitions

Pounds per square inch(psi)

The pound per square inch is a pressure unit used commonly in engineering and in US customary systems.

Reviewed

Symbol
psi
Quantity
Pressure
Measurement system
Imperial and US customary
SI classification
Non-SI unit
Reference unit
Pascal
Exact relationship
1 psi = 6,894.757293168 Pa exactly

What psi is

PSI is a common engineering pressure unit in the US, especially for tire pressure and hydraulic systems.

Convert Pounds per square inch