1 psi equals 0.068046 atm. To convert psi to atm, multiply the value by 0.068046; divide by 0.068046 to convert back. Enter any number above and the result appears instantly — free and entirely in your browser.
How do you convert psi to atm?
The conversion formula is atm = psi × 0.068046. The conversion factor is fixed by definition, so the result is always exact.
psi to atm conversion table
| psi | atm |
|---|---|
| 1 psi | 0.068046 atm |
| 2 psi | 0.136092 atm |
| 5 psi | 0.34023 atm |
| 10 psi | 0.68046 atm |
| 20 psi | 1.36092 atm |
| 50 psi | 3.4023 atm |
What is psi (psi)?
Pounds per square inch (psi) is the imperial pressure unit common in the US and UK, used for tyre pressure, air compressors and hydraulics. One psi equals about 6,895 pascals.
What is atm (atm)?
The standard atmosphere (atm) is defined as exactly 101,325 pascals — roughly the average air pressure at sea level. It serves as a reference value in chemistry and physics.
Why convert psi to atm?
Pressure units differ by region and field: Europe uses bar, the US uses psi, science uses pascals and kilopascals, and medicine still uses mmHg. Converting between them is a daily need for mechanics, engineers and divers.
Standard atmospheric pressure is defined as exactly 101,325 Pa — equal to 1.01325 bar or 14.696 psi (BIPM/NIST). Car tyres are typically inflated to about 2.2–2.5 bar (32–36 psi).
How to convert psi to atm
- Enter the value in psi into the left field of the converter.
- Read the result in atm instantly in the right field — it updates automatically.
- Use the swap button to reverse the direction (atm to psi).
The converter runs entirely in your browser: no uploads, no queue, no limits. You can even use it offline.