Atmospheres to Bar Converter
Convert atm to bar instantly. 1 atm = 1.01325 bar.
Conversion Formula
bar = atm × 1.01325
Example
25 atm × 1.01325 = 25.33125 bar
Convert the other way: Bar to Atmospheres →
Atmospheres to Bar Conversion Table
| Atmospheres (atm) | Bar (bar) |
|---|---|
| 0.1 | 0.101325 |
| 0.5 | 0.506625 |
| 1 | 1.01325 |
| 2 | 2.0265 |
| 5 | 5.06625 |
| 10 | 10.1325 |
| 20 | 20.265 |
| 25 | 25.33125 |
| 50 | 50.6625 |
| 100 | 101.325 |
| 500 | 506.625 |
| 1,000 | 1,013.25 |
About These Units
- Atmospheres (atm)
- The standard atmosphere, defined as exactly 101,325 Pa to represent typical sea-level air pressure. Chemists use it for gas laws and standard conditions, and divers use it to describe the pressure at depth.
- Bar (bar)
- Exactly 100,000 pascals, close to sea-level air pressure but not part of the SI. It is common for European tire pressures, scuba tanks, and espresso machines, and a millibar equals the hectopascal used in weather reports.
Frequently Asked Questions
How many bar are in 1 atm?
1 atm equals 1.01325 bar.
How do I convert Atmospheres to Bar?
Multiply your Atmospheres value by 1.01325. For example, 25 atm × 1.01325 = 25.33125 bar.
How many atm are in 1 bar?
1 bar equals 0.9869232667 atm.