Standard Atmosphere to Pound per Square Inch
Convert atm to psi instantly — free, no sign-up.
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About the Standard Atmosphere (atm)
The Standard Atmosphere is defined as exactly 101,325 pascals, representing average air pressure at sea level — used as a reference point across chemistry and engineering.
About the Pound per Square Inch (psi)
The Pound per Square Inch is the standard pressure unit in the US for tire pressure, hydraulics, and plumbing specs.
How to convert atm to psi
- Enter the value in atm in the box above.
- The psi equivalent updates instantly.
- Use the swap button to convert psi back to atm just as easily.