How to convert pounds per square inch to atmospheres
atm = psi × 0.06804596391Multiply the value in pounds per square inch by 0.06804596391. To go the other way, multiply by 14.69594878 (or divide by 0.06804596391).
A pound per square inch is smaller than a standard atmosphere: it takes 14.69594878 pounds per square inch to make one standard atmosphere.
Worked examples
- 1 pound per square inch1 psi × 0.06804596391 = 0.06804596391 atm
- 5 pounds per square inch5 psi × 0.06804596391 = 0.3402298195 atm
- 10 pounds per square inch10 psi × 0.06804596391 = 0.6804596391 atm
- 20 pounds per square inch20 psi × 0.06804596391 = 1.360919278 atm
- 100 pounds per square inch100 psi × 0.06804596391 = 6.804596391 atm
Pounds per square inch to atmospheres conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Pounds per square inch (psi) | Atmospheres (atm) |
|---|---|
| 0.1 psi | 0.0068045964 atm |
| 0.25 psi | 0.017011491 atm |
| 0.5 psi | 0.034022982 atm |
| 1 psi | 0.068045964 atm |
| 2 psi | 0.13609193 atm |
| 3 psi | 0.20413789 atm |
| 4 psi | 0.27218386 atm |
| 5 psi | 0.34022982 atm |
| 6 psi | 0.40827578 atm |
| 7 psi | 0.47632175 atm |
| 8 psi | 0.54436771 atm |
| 9 psi | 0.61241368 atm |
| 10 psi | 0.68045964 atm |
| Pounds per square inch (psi) | Atmospheres (atm) |
|---|---|
| 12 psi | 0.81655157 atm |
| 15 psi | 1.0206895 atm |
| 20 psi | 1.3609193 atm |
| 25 psi | 1.7011491 atm |
| 30 psi | 2.0413789 atm |
| 40 psi | 2.7218386 atm |
| 50 psi | 3.4022982 atm |
| 75 psi | 5.1034473 atm |
| 100 psi | 6.8045964 atm |
| 250 psi | 17.011491 atm |
| 500 psi | 34.022982 atm |
| 1,000 psi | 68.045964 atm |
About the units
Pound per square inch (psi)
One pound-force per square inch, about 6,894.76 Pa. US tire, air-compressor and hydraulic pressures are given in psi. One pound per square inch equals 6,894.757293 pascals (Pa).
Standard atmosphere (atm)
Exactly 101,325 Pa — average sea-level air pressure.
Frequently asked questions
How many atmospheres are in one pound per square inch?
There are 0.06804596391 atmospheres in one pound per square inch, and this value is exact by definition.
How do I convert pounds per square inch to atmospheres?
Multiply the number of pounds per square inch by 0.06804596391. For example, 10 psi × 0.06804596391 = 0.6804596391 atm.
How many pounds per square inch are in one standard atmosphere?
One standard atmosphere equals 14.69594878 pounds per square inch. That is the reverse factor, 1 ÷ 0.06804596391.
What is 10 pounds per square inch in atmospheres?
10 psi = 0.6804596391 atm.
Is this psi to atm converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.