How to convert atmospheres to PSI
To convert atmospheres to PSI, multiply the value by the conversion factor 14.69594878. To go the other way, multiply by 0.0680459639 (or divide by 14.69594878).
Worked example: 30 atm to psi
- Write the value: 30 atm
- Multiply by 14.69594878: 30 × 14.69594878
- Result: 440.878 psi
Atmosphere to PSI conversion table
Quick reference values, rounded to 6 significant digits.
| Atmosphere (atm) | PSI (psi) |
|---|---|
| 0.1 atm | 1.46959 psi |
| 0.25 atm | 3.67399 psi |
| 0.5 atm | 7.34797 psi |
| 1 atm | 14.6959 psi |
| 2 atm | 29.3919 psi |
| 3 atm | 44.0878 psi |
| 4 atm | 58.7838 psi |
| 5 atm | 73.4797 psi |
| 6 atm | 88.1757 psi |
| 7 atm | 102.872 psi |
| 8 atm | 117.568 psi |
| 9 atm | 132.264 psi |
| 10 atm | 146.959 psi |
| 12 atm | 176.351 psi |
| 15 atm | 220.439 psi |
| 20 atm | 293.919 psi |
| 25 atm | 367.399 psi |
| 30 atm | 440.878 psi |
| 40 atm | 587.838 psi |
| 50 atm | 734.797 psi |
| 75 atm | 1,102.2 psi |
| 100 atm | 1,469.59 psi |
| 250 atm | 3,673.99 psi |
| 500 atm | 7,347.97 psi |
| 1,000 atm | 14,695.95 psi |
PSI to Atmosphere
| psi | atm |
|---|---|
| 1 psi | 0.068046 atm |
| 5 psi | 0.34023 atm |
| 10 psi | 0.68046 atm |
| 50 psi | 3.4023 atm |
| 100 psi | 6.8046 atm |
1 Atmosphere in other pressure units
About Atmosphere and PSI
What is a atmosphere (atm)?
A standard atmosphere is 101,325 Pa, the average air pressure at sea level.
What is a psi (psi)?
Pounds per square inch is used for tyre pressure and gas cylinders.
Where atmosphere to psi conversion is used
Pressure conversions are needed for tyre pressure, weather, gas cylinders, medical devices and engineering. Converting between atmospheres and PSI is especially common when you compare products, read foreign specifications, or fill in forms that expect a specific unit.
Need every unit at once? Use the full Pressure Converter.
Frequently asked questions
How many PSI are in 1 atmosphere?
1 Atmosphere equals 14.6959 psi.
How do I convert atmospheres to PSI?
Multiply the number of atmospheres by 14.69594878. For example, 30 atm × 14.69594878 = 440.878 psi.
What is 30 atm in psi?
30 atm = 440.878 psi.
How many atmospheres are in 1 psi?
1 PSI equals 0.068046 atm. Use the PSI to ATM converter for the reverse direction.
Is this Atmosphere to PSI converter accurate?
Yes. It uses exact internationally defined conversion factors, calculated with full floating-point precision. Results are displayed rounded for readability.