Convert Atmosphere to Bar
Use this free converter to change atmospheres (atm) into bars (bar). Atmosphere and bar both measure pressure. As a quick reference, 1 atm equals 1.01325 bar, and 1 bar equals 0.98692327 atm.
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Bar (bar)
1.01325
1 atm = 1.01325 bar
Pressure conversion table
| Atmosphere | Bar |
|---|---|
| 0.01 | 0.0101325 |
| 0.1 | 0.101325 |
| 0.5 | 0.506625 |
| 1 | 1.01325 |
| 2 | 2.0265 |
| 3 | 3.03975 |
| 5 | 5.06625 |
| 10 | 10.1325 |
| 20 | 20.265 |
| 25 | 25.33125 |
| 50 | 50.6625 |
| 100 | 101.325 |
| 1,000 | 1013.25 |
How to convert Atmosphere to Bar
Multiply the atmosphere value by 1.01325 to get bars.
- Enter the number of atmospheres you want to convert.
- The converter instantly shows the equivalent value in bars.
- Worked example: 15 atm × 1.01325 = 15.19875 bar.
- Use the swap button to reverse the conversion (bar to atmosphere).
About these units
Atmosphere (atm)
- Definition
- A standard atmosphere (atm) is defined as exactly 101,325 pascals, roughly average sea-level pressure.
- History
- It was standardised as a reference pressure for scientific work.
- Current use
- Atmospheres are used in chemistry, physics, and diving as a reference pressure.
Bar (bar)
- Definition
- A bar is a metric pressure unit equal to 100,000 pascals, close to average sea-level atmospheric pressure.
- History
- It was introduced by meteorologist Vilhelm Bjerknes in the early 20th century.
- Current use
- Bars are used in meteorology, diving, and industry to express pressure.
Frequently asked questions
How many bars are in a atmosphere?
There are 1.01325 bar in 1 atm. To convert, multiply the number of atmospheres by 1.01325.
How do I convert atmospheres to bars?
Multiply the atmosphere value by 1.01325 to get bars. For example, 10 atm = 10.1325 bar.
Is this atmosphere-to-bar converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Atmosphere to other pressure units
| Unit | 1 Atmosphere equals |
|---|---|
| Pascal (Pa) | 101325 Pa |
| Kilopascal (kPa) | 101.325 kPa |
| Bar (bar) | 1.01325 bar |
| Pound per Square Inch (psi) | 14.695949 psi |
| Torr (Torr) | 760 Torr |
| Millibar (mbar) | 1013.25 mbar |