How do I convert Pascal (Pa) to Pounds per square inch (psi)?

1 pa equals 0.000145 psi using SI-based conversion and precise factors.

What is the formula to convert Pascal (Pa) to Pounds per square inch (psi)?

This is a linear unit conversion using a constant factor between units.

Yes, it uses exact definitions or standardized constants (e.g., 1 in = 25.4 mm).

Use the shareable URL pattern: /convert/pa-to-psi/1

Category: Pressure

Value From To Precision

0.000145 psi

1 pa = 0.000145 psi

High-precision rounding: 6 decimals

We convert by pivoting through the SI base unit for Pressure and applying exact factors where applicable.

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Pressure is force per area; meteorology and engineering use various units.

Pascal (Pa)

SI unit; 1 N/m².

History: Named after Blaise Pascal.

Pounds per square inch (psi)

Imperial/US pressure unit.

History: Common in automotive and hydraulics.