Atmospheres to pascals
Convert standard atmospheres to the SI pressure unit. One standard atmosphere is exactly 101,325 pascals.
Edit either value. Use a decimal point; commas group thousands. Rounding affects display only.
How to convert standard atmospheres to pascals
Convert standard atmospheres to the SI pressure unit. One standard atmosphere is exactly 101,325 pascals.
Formula coefficients shown rounded. Calculations use the stored factors before display rounding.
A worked example
For 10 atm, the result is approximately 1013250 Pa. To go the other way, edit the result above or swap the units.
These are pressure units only. Gauge and absolute readings need a reference pressure and are not interchangeable.
Where the numbers come from
Factors follow NIST conversion references and documented unit definitions. Read our accuracy and rounding notes.
The table and method describe this page’s original pair. Changing units above does not change this reference section.
| Standard atmospheres (atm) | Pascals (Pa) |
|---|---|
| 1 | 101325 |
| 2 | 202650 |
| 5 | 506625 |
| 10 | 1013250 |
| 20 | 2026500 |
| 25 | 2533125 |
| 50 | 5066250 |
| 100 | 10132500 |
| 500 | 50662500 |
| 1000 | 101325000 |