Direct conversion
Convert standard atmosphere [atm] to bar [bar] 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 standard atmosphere [atm] = 1.01325 bar [bar]
1 standard atmosphere [atm] = 1.01325 bar [bar]
Example: 1 standard atmosphere [atm] equals 1.01325 bar [bar].
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.
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.
The bar is a metric pressure unit equal to 100,000 pascals.
HistoryThe bar was introduced as a convenient pressure unit close to atmospheric pressure.
Current useBars are used for tire pressure, compressors, diving, weather, hydraulics, and industrial gauges.
| standard atmosphere [atm] | bar [bar] |
|---|---|
| 1 | 1.01325 |
| 2 | 2.0265 |
| 5 | 5.06625 |
| 10 | 10.1325 |
| 20 | 20.265 |
| 25 | 25.33125 |
| 50 | 50.6625 |
| 100 | 101.325 |
| 1000 | 1013.25 |
Use this formula: 1 standard atmosphere [atm] = 1.01325 bar [bar] Enter your value in the calculator and the result updates instantly.
1 standard atmosphere [atm] equals 1.01325 bar [bar].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.