Convert atm to bar
Type the number of atmospheres that you wish to convert to bars.
How to Convert Atmospheres to Bars
The atmosphere and bar are both units of pressure. 1 atmosphere equals 1.01325 bars. This means to convert atmospheres to bars, you multiply by 1.01325.
Formula
Step-by-Step Example
Convert 5 atm to bars:
We need to convert atmospheres to bars
Since 1 atm = 1.01325 bar, multiply by 1.01325
5 × 1.01325 = 5.06625
5 atm = 5.06625 bar
Atmosphere to Bar Conversion Table
Quick reference table for common atmosphere to bar conversions. Click any value for detailed calculation.
| Atmospheres (atm) | Bars (bar) |
|---|---|
| 1 atm | 1.01325 bar |
| 2 atm | 2.0265 bar |
| 5 atm | 5.06625 bar |
| 10 atm | 10.1325 bar |
| 15 atm | 15.19875 bar |
| 20 atm | 20.265 bar |
| 25 atm | 25.33125 bar |
| 50 atm | 50.6625 bar |
| 100 atm | 101.325 bar |
About These Units
Atmosphere (atm)
One standard atmosphere (atm) equals 101,325 Pascals, 1.01325 bar, or 14.696 PSI—the average air pressure at sea level. Atmospheres measure diving depth (every 10 meters adds ~1 atm), altitude effects, and chemical reactions. Used as a reference pressure in science.
Bar (bar)
A bar equals 100,000 Pascals or approximately 14.5 PSI. Bar is slightly less than standard atmospheric pressure (1.01325 bar). Bars measure tire pressure, compressed gas cylinders, scuba tank pressure (200-300 bar), and industrial processes.
Frequently Asked Questions
How do I convert atmospheres to bars?
To convert atmospheres to bars, multiply the value by 1.01325. For example, 10 atm = 10.1325 bar.
How many bars are in 1 atmosphere?
1 atmosphere equals 1.01325 bars.
What is the formula for atmospheres to bars?
The formula is: bar = atm × 1.01325.