Convert Pounds per Square Inch to Atmospheres
psi to atm · pressure conversion
What are pounds per square inch and atmospheres?
Pounds per square inch is the imperial pressure unit, standard for US tires and plumbing. One atmosphere is the average air pressure at sea level, defined as 101,325 Pa. For reference: car tires run around 32 psi (220 kPa), and sea-level air pressure is about 101 kPa.
How to convert pounds per square inch to atmospheres
1 psi = 0.068046 atm. To convert, multiply the number of pounds per square inch by 0.068046. For example, 5 psi = 0.34023 atm, and 20 psi = 1.36092 atm. To go the other way, multiply atmospheres by 14.6959 (since 1 atm = 14.6959 psi).
Pounds per Square Inch to Atmospheres conversion table
| Pounds per Square Inch (psi) | Atmospheres (atm) |
|---|---|
| 1 | 0.068046 |
| 2 | 0.136092 |
| 5 | 0.34023 |
| 10 | 0.68046 |
| 50 | 3.4023 |
| 100 | 6.8046 |
| 1,000 | 68.046 |
FAQ
What is 1 psi in atm?
1 psi = 0.068046 atm. To convert any amount, multiply the number of pounds per square inch by 0.068046.
How do I convert atmospheres back to pounds per square inch?
Go the other way: 1 atm = 14.6959 psi, so multiply atmospheres by 14.6959 to get pounds per square inch.
Is a pounds per square inch bigger than a atmosphere?
No — 1 psi is the smaller unit, equal to 0.068046 atm (it takes 14.6959 psi to make one atm).
Are these pressure conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.