Atmospheres to PSI – convert atm to psi
Convert atmospheres to PSI (atm to pounds per square inch) to compare absolute pressure and gauge pressure in familiar units. Ideal for diving, tyre pressures and engineering calculations.
Open the interactive atm → psi converter:
Use main converter (atm → psi) or switch to psi → atmThe pressure converter also supports pascals, kilopascals, bar, millibar and more for science and engineering work.
Quick reference: atm to psi
One atmosphere is about 14.6959 psi. So: psi = atm × 14.6959. Common examples:
| Atmospheres (atm) | PSI (approx.) |
|---|---|
| 0.5 atm | 7.35 psi |
| 1 atm | 14.70 psi |
| 2 atm | 29.39 psi |
| 3 atm | 44.09 psi |
| 4 atm | 58.78 psi |
| 5 atm | 73.48 psi |
Why convert atmospheres to PSI?
atm to psi is useful when you:
- Relate scientific or absolute pressure values to tyre gauge readings.
- Work with scuba tanks rated in bar or atm but equipment stamped in psi.
- Compare hydraulic, pneumatic or process pressures across unit systems.
- Teach how different pressure scales relate to everyday air pressure.
Other pressure converters on this site
All pressure conversions on the homepage use standard, widely accepted conversion factors so your atm, bar, kPa and psi values stay consistent.
Page last updated: 4 December 2025.