Pound-force per square inch (psi)

One pound-force per square inch: 4.4482216152605 N / (0.0254 m)².

What is a psi?

Symbol: psi
Quantity: Pressure
Unit system: US customary
Definition: One pound-force per square inch: 4.4482216152605 N / (0.0254 m)².
Exact: Yes, the value is exact by definition
Source: NIST Special Publication 811 (2008), Appendix B.8

Used in the United States for tire pressure, compressed air, hydraulics and gas cylinders.

Pound-force per square inch in other units
Pound-force per square inch	Pascal	Kilopascal	Megapascal
1 psi	≈ 6894.757293 Pa	≈ 6.894757293 kPa	≈ 0.006894757293 MPa
10 psi	≈ 68947.57293 Pa	≈ 68.94757293 kPa	≈ 0.06894757293 MPa
100 psi	≈ 689475.7293 Pa	≈ 689.4757293 kPa	≈ 0.6894757293 MPa
1000 psi	≈ 6894757.293 Pa	≈ 6894.757293 kPa	≈ 6.894757293 MPa

The next smaller pressure unit is the kilopascal (kPa). 1 psi ≈ 6.894757293 kPa, and 1 kPa ≈ 0.1450377377 psi.

The next larger pressure unit is the technical atmosphere (at). 1 psi ≈ 0.07030695796 at, and 1 at ≈ 14.22334331 psi.

How many pascals are in one psi?: One psi ≈ 6894.757293 Pa (pascals).
How many kilopascals are in one psi?: One psi ≈ 6.894757293 kPa (kilopascals).
How many megapascals are in one psi?: One psi ≈ 0.006894757293 MPa (megapascals).