1 atm equals 14.6959 psi. To convert atm to psi, multiply the value by 14.6959; divide by 14.6959 to convert back. Enter any number above and the result appears instantly — free and entirely in your browser.
How do you convert atm to psi?
The conversion formula is psi = atm × 14.6959. The conversion factor is fixed by definition, so the result is always exact.
atm to psi conversion table
| atm | psi |
|---|---|
| 1 atm | 14.6959 psi |
| 2 atm | 29.3919 psi |
| 5 atm | 73.4797 psi |
| 10 atm | 146.959 psi |
| 20 atm | 293.919 psi |
| 50 atm | 734.797 psi |
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.
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.
Why convert atm to psi?
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 atm to psi
- Enter the value in atm into the left field of the converter.
- Read the result in psi instantly in the right field — it updates automatically.
- Use the swap button to reverse the direction (psi to atm).
The converter runs entirely in your browser: no uploads, no queue, no limits. You can even use it offline.