pascal
Papressure · International · Modern
SI derived unit of pressure and stress; 1 Pa = 1 N/m² = 1 kg·m⁻¹·s⁻².
Converter
pressure · United States · Modern
pound per square inch (psi)
psiexact
- Record
- M490
- Definition quality
- Standardized
- Conversion mode
- multiplicative
- Calculator
- Fully calculable
Definition
1 psi = exactly 6894.757293168361 Pa using international lb/in and standard gravity.
Reference value
One pound per square inch (psi) is equal to 6,895 pascals.
History & use
Common U.S. pressure unit.
Modern use
Current-use record in the project inventory; exact scope should follow the definition and regional/system context shown here.
Did you know?
NIST rounds to 6894.757 Pa.
Sources & evidence
Source tier Tier A · confidence High
Related measurements
bar
barpressure · International · Modern / historical
1 bar = exactly 100,000 Pa.