Atmosphere to PSI Converter (atm to psi)
1 atmosphere = 14.6959 psi. One standard atmosphere is 14.6959 psi, the average air pressure at sea level.
Result
3 atm = 44.087829 psi
How to convert atmosphere to psi
One standard atmosphere is 14.6959 psi, the average air pressure at sea level. Diving, aviation and chemistry use atmospheres as a quick comparison to the pressure we live under.
Formula
psi = atm × 14.6959
Worked example
3 atm × 14.6959 = 44.0878 psi
Atmosphere to PSI quick-reference table
| Atmosphere (atm) | PSI (psi) |
|---|---|
| 0.5 atm | 7.34797 psi |
| 1 atm | 14.6959 psi |
| 2 atm | 29.3919 psi |
| 3 atm | 44.0878 psi |
| 5 atm | 73.4797 psi |
| 10 atm | 146.959 psi |
Real-life examples
Diving to 20 m adds roughly 2 atm of water pressure to the 1 atm of air, a total of about 3 atm or 44 psi.
Frequently asked questions
How many psi is 1 atm?
One atmosphere is 14.6959 psi.
Is atm the same as bar?
Nearly. 1 atm is 1.01325 bar, about 1.3 percent more than 1 bar.
What is 1 atmosphere in psi?
1 atmosphere = 14.6959 psi (atm to psi).
What is the formula to convert atm to psi?
psi = atm × 14.6959. For example, 3 atm × 14.6959 = 44.0878 psi.
How do I convert psi back to atm?
Use the reverse converter: 1 psi = 0.068046 atmosphere. Check: 44.0878 psi converts back to 3 atm.
Reverse conversion
Need the other direction? PSI to Atmosphere converter (psi to atm): 1 psi = 0.068046 atmosphere.
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