Direct conversion
Convert pound per square inch [psi] to standard atmosphere [atm] instantly with formula, examples, chart, and FAQs.
Quick answer
Use the calculator below for any custom value, then check the formula, examples, chart, and reverse conversion links.
1 pound per square inch [psi] = 0.068046 standard atmosphere [atm]
1 pound per square inch [psi] = 0.068046 standard atmosphere [atm]
Example: 1 pound per square inch [psi] equals 0.068046 standard atmosphere [atm].
Pressure conversions use pascal as the reference unit and include common engineering, weather, tire, and laboratory pressure units.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
Pound per square inch is a pressure unit showing pounds-force applied over one square inch.
HistoryPSI comes from imperial force and area units and remains common in mechanical and pressure-gauge contexts.
Current usePSI is used for tire pressure, compressors, plumbing, hydraulics, gas cylinders, and equipment ratings.
The standard atmosphere is a pressure unit equal to 101,325 pascals.
HistoryAtmosphere was defined around average sea-level air pressure for reference calculations.
Current useAtmospheres are used in chemistry, gas laws, diving references, and technical pressure comparisons.
| pound per square inch [psi] | standard atmosphere [atm] |
|---|---|
| 1 | 0.068046 |
| 2 | 0.136092 |
| 5 | 0.34023 |
| 10 | 0.68046 |
| 20 | 1.360919 |
| 25 | 1.701149 |
| 50 | 3.402298 |
| 100 | 6.804596 |
| 1000 | 68.045964 |
Use this formula: 1 pound per square inch [psi] = 0.068046 standard atmosphere [atm] Enter your value in the calculator and the result updates instantly.
1 pound per square inch [psi] equals 0.068046 standard atmosphere [atm].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.