Standard atmospheres to Bar
Type a value in Standard atmospheres and get the result in Bar, calculated exactly.
1 Standard atmospheres = 1.01325 Bar
Precision
Exact factorThis result is exact.
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Formula
bar = atm × 1.01325
To convert Standard atmospheres to Bar, multiply the value by 1.01325.
Worked examples
- 1 atm × 1.01325 = 1.01325 bar
- 100 atm × 1.01325 = 101.325 bar
- 50 atm × 1.01325 = 50.6625 bar
This factor is exact by definition.
Conversion table
| Standard atmospheres (atm) | Bar (bar) |
|---|---|
| 1 | 1.01325 |
| 2 | 2.0265 |
| 3 | 3.03975 |
| 4 | 4.053 |
| 5 | 5.06625 |
| 6 | 6.0795 |
| 7 | 7.09275 |
| 8 | 8.106 |
| 9 | 9.11925 |
| 10 | 10.1325 |
| 15 | 15.19875 |
| 20 | 20.265 |
| 25 | 25.33125 |
| 30 | 30.3975 |
| 40 | 40.53 |
| 50 | 50.6625 |
| 60 | 60.795 |
| 70 | 70.9275 |
| 75 | 75.99375 |
| 80 | 81.06 |
| 90 | 91.1925 |
| 100 | 101.325 |
Values marked ≈ are rounded; the rest are exact.
Reverse table: Bar to Standard atmospheres
| Bar (bar) | Standard atmospheres (atm) |
|---|---|
| 1 | ≈ 0.9869233 |
| 2 | ≈ 1.973847 |
| 3 | ≈ 2.96077 |
| 4 | ≈ 3.947693 |
| 5 | ≈ 4.934616 |
| 6 | ≈ 5.92154 |
| 7 | ≈ 6.908463 |
| 8 | ≈ 7.895386 |
| 9 | ≈ 8.882309 |
| 10 | ≈ 9.869233 |
| 15 | ≈ 14.80385 |
| 20 | ≈ 19.73847 |
| 25 | ≈ 24.67308 |
| 30 | ≈ 29.6077 |
| 40 | ≈ 39.47693 |
| 50 | ≈ 49.34616 |
| 60 | ≈ 59.2154 |
| 70 | ≈ 69.08463 |
| 75 | ≈ 74.01925 |
| 80 | ≈ 78.95386 |
| 90 | ≈ 88.82309 |
| 100 | ≈ 98.69233 |
Unit definitions
- Standard atmospheres atm
- Exactly 101 325 pascals.
- Bar bar
- Exactly 100 000 pascals, close to atmospheric pressure at sea level.
Questions people ask
Standard atmospheres to Bar: what is the conversion factor?
One atm is 1.01325 bar.
How do I convert Standard atmospheres to Bar?
Use the formula above. For example, 100 atm = 101.325 bar.
Is the conversion exact?
Yes. Both units have exact definitions, so the factor is exact; a result is only rounded when its decimals never end.
Factors checked 19 October 2026.