Pound per square inch psi
About the Pound per square inch
One psi is the pressure of one pound-force on one square inch, about 6894.757 pascals. Standard atmospheric pressure is about 14.696 psi. Tyre pressures, scuba tanks and hydraulic systems in the US are rated in psi.
Related Units
Pascal
Pa1 Pa = 1 N/m² = 1 kg·m⁻¹·s⁻²
The pascal is a pressure of one newton per square metre, named after Blaise Pascal. It is a small unit: standard...
Bar
bar1 bar = 100,000 Pa (exact)
The bar equals 100 kilopascals, close to but slightly less than one standard atmosphere of 101,325 Pa. Its submultiple...
Standard atmosphere
atm101,325 Pa (exact)
The standard atmosphere is exactly 101,325 pascals, roughly average sea-level air pressure. It was historically the...
Torr
Torr101,325/760 Pa ≈ 133.322 Pa
The torr is exactly 1/760 of a standard atmosphere, about 133.322 pascals. It is named after Evangelista Torricelli...