Convert atmosphere (standard)s to bars
1 atm = 1.01325 bar — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
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Show this value in all 27 pressure & stress units
- Gigapascals GPa 0.000 101 325
- Megapascals MPa 0.101 325
- Kilopascals kPa 101.325
- Hectopascals hPa 1013.25
- Pascals Pa 101 325
- Millipascals mPa 101 325 000
- Micropascals µPa 101 325 000 000
- Bars bar 1.013 25
- Millibars mbar 1013.25
- Atmosphere (standard)s atm 1
- Atmosphere (technical)s at 1.033 227 452 8
- Torrs Torr 760
- Millitorrs mTorr 760 000
- Millimeter of mercurys mmHg 759.999 891 726
- Centimeter of mercurys cmHg 75.999 989 172 6
- Inch of mercurys inHg 29.921 255 579 7
- Millimeter of waters mmH₂O 10 332.274 528
- Centimeter of waters cmH₂O 1033.227 452 8
- Inch of waters inH₂O 406.782 461 732
- Foot of waters ftH₂O 33.898 538 477 7
- Pound per square inchs psi 14.695 948 775 5
- Kilopound per square inchs ksi 0.014 695 948 775 5
- Pound per square foots psf 2116.216 623 67
- Kilogram-force per square centimeters kgf/cm² 1.033 227 452 8
- Kilogram-force per square meters kgf/m² 10 332.274 528
- Newton per square millimeters N/mm² 0.101 325
- Dyne per square centimeters dyn/cm² 1 013 250
Every row is Atmosphere (standard) (atm) converted through the pascal, in exact rational arithmetic.
How to convert atmosphere (standard)s to bars
Multiply the number of atmosphere (standard)s by 1.01325 to get bars.
The exact factor is 1.01325 — as a fraction, 4053/4000.
Atmosphere (standard): Exactly 101 325 Pa by definition.
Bar: Exactly 100 kPa. Close to atmospheric pressure, which is why it caught on.
Atmosphere (standard) to Bar conversion table
| Atmosphere (standard)s (atm) | Bars (bar) |
|---|---|
| 1 atm | 1.013 25 |
| 2 atm | 2.0265 |
| 3 atm | 3.039 75 |
| 5 atm | 5.066 25 |
| 10 atm | 10.1325 |
| 20 atm | 20.265 |
| 25 atm | 25.331 25 |
| 50 atm | 50.6625 |
| 100 atm | 101.325 |
| 250 atm | 253.3125 |
| 500 atm | 506.625 |
| 1000 atm | 1013.25 |
Bar to Atmosphere (standard) conversion table
| Bars (bar) | Atmosphere (standard)s (atm) |
|---|---|
| 1 bar | 0.986 923 27 |
| 2 bar | 1.973 846 5 |
| 3 bar | 2.960 769 8 |
| 5 bar | 4.934 616 3 |
| 10 bar | 9.869 232 7 |
| 20 bar | 19.738 465 |
| 25 bar | 24.673 082 |
| 50 bar | 49.346 163 |
| 100 bar | 98.692 327 |
| 250 bar | 246.730 82 |
| 500 bar | 493.461 63 |
| 1000 bar | 986.923 27 |
Frequently asked
How many bars are in a atmosphere (standard)?
One atmosphere (standard) equals 1.01325 bars (atm → bar). That figure is exact, not rounded.
How do you convert atmosphere (standard)s to bars?
Multiply the number of atmosphere (standard)s by 1.01325 to get bars.
What is 1 bar in atmosphere (standard)s?
One bar is 0.9869232667 atmosphere (standard)s.
What is 10 atm in bar?
10 atm = 10.1325 bar.
What exactly is a atmosphere (standard)?
Exactly 101 325 Pa by definition.
What exactly is a bar?
Exactly 100 kPa. Close to atmospheric pressure, which is why it caught on.