How to convert PSI to atmospheres
To convert PSI to atmospheres, multiply by 0.0680459639099. Pressure conversions are used for tire inflation, weather, scuba diving, hydraulics and medical devices.
PSI to Atmosphere conversion table
| PSI (psi) | Atmosphere (atm) |
|---|---|
| 0.1 psi | 0.00680459639099 atm |
| 0.5 psi | 0.0340229819549 atm |
| 1 psi | 0.0680459639099 atm |
| 2 psi | 0.13609192782 atm |
| 3 psi | 0.20413789173 atm |
| 4 psi | 0.27218385564 atm |
| 5 psi | 0.340229819549 atm |
| 10 psi | 0.680459639099 atm |
| 20 psi | 1.3609192782 atm |
| 25 psi | 1.70114909775 atm |
| 50 psi | 3.40229819549 atm |
| 100 psi | 6.80459639099 atm |
| 500 psi | 34.0229819549 atm |
| 1,000 psi | 68.0459639099 atm |
About the units
PSI (psi)
Pounds per square inch is the US unit for tire, air compressor and hydraulic pressure.
Atmosphere (atm)
A standard atmosphere is defined as exactly 101,325 pascals.
How to use this converter
- Type the number of PSI (psi) in the input box.
- The result in atmospheres appears instantly — no button needed.
- See the same value in every other pressure unit just below.
- Use “Swap units” to convert atmospheres back to PSI.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many atmospheres are in one psi?
One psi equals 0.0680459639099 atmospheres. 0.0680459639099 is the exact factor used by this converter.
How do I convert PSI to atmospheres?
Multiply the value in PSI by 0.0680459639099. To go the other way, multiply atmospheres by 14.6959487755.
What is 10 psi in atm?
10 psi = 0.680459639099 atm. Also, 5 psi = 0.340229819549 atm and 100 psi = 6.80459639099 atm.
What is the difference between a psi and a atmosphere?
Pounds per square inch is the US unit for tire, air compressor and hydraulic pressure. A standard atmosphere is defined as exactly 101,325 pascals.
Is this tool free and private?
Yes — the PSI to Atmosphere is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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