Convert Pascal (Pa) (pa) to Pounds per square inch (psi) (psi)
Category: Pressure
0.5 pa = 7.3E-05 psi
High-precision rounding: 6 decimals
How to convert pascal (pa) to pounds per square inch (psi)
We convert by pivoting through the SI base unit for Pressure and applying exact factors where applicable.
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Examples
Linear unit conversions use standardized factors; many are exact by definition (e.g., 1 in = 25.4 mm, 1 ft = 0.3048 m).
Common mistakes
- Comparing gauge pressure (psig) with absolute pressure (psia/hPa) without converting reference.
- Mixing bar with atm (1 atm = 1.01325 bar).
About Pressure
Pressure is force per unit area. Pascals (and kPa, hPa) are SI, while bar and psi are widely used in engineering and scuba. Conversions must respect absolute vs gauge references when comparing values.
About Pascal (Pa)
Pascal (Pa)
SI unit equal to 1 N/m². Used for stress, tire pressure (kPa), and atmospheric science (hPa).
History: Named after Blaise Pascal; became practical with digital sensors capable of stable low-pressure readings.
About Pounds per square inch (psi)
Pounds per square inch (psi)
Imperial/US pressure unit. Common for tires, hydraulics, and compressors; often shown with gauge (psig) vs absolute (psia).
History: Industrial adoption in North America entrenched psi as a practical non-SI unit.
Related conversions to psi
- bar → psi Bar
- atm → psi Standard atmosphere (atm)
- torr → psi Torr