Pressure
atm to bar Converter
1 atm = 1.0132 bar. Enter any value and the result updates instantly.
Convert
Accuracy and rounding
Useful for tires, pumps, HVAC, weather, and technical specs. Check whether your source uses gauge or absolute pressure.
Pressure factors are fixed, but real-world readings may be gauge pressure or absolute pressure depending on the instrument.
For tires and pumps, match the gauge precision. For engineering specs, keep enough decimals to avoid tolerance drift.
How to convert atm to bar
- Type the atm value in the calculator.
- Keep atm selected as the from unit and bar selected as the to unit.
- Use the instant result, or copy it with the copy button.
atm to bar chart
| atm | bar |
|---|---|
| 1 atm | 1.0132 bar |
| 2 atm | 2.0265 bar |
| 5 atm | 5.0663 bar |
| 10 atm | 10.1325 bar |
| 25 atm | 25.3313 bar |
| 50 atm | 50.6625 bar |
| 100 atm | 101.33 bar |
Formula
bar = atm x 1.01325
Example: 1 atm = 1.0132 bar.
Source
Pressure units derived from pascal relationships and fixed conventional factors.
Common questions
How do I convert atm to bar?
Enter the atm value in the converter, or multiply by the factor shown in the formula. 1 atm = 1.0132 bar.
What should I watch out for?
Check whether the original value is gauge pressure or absolute pressure before comparing readings.
Where does this pressure conversion come from?
Pressure units derived from pascal relationships and fixed conventional factors. ConverterBase uses stable definitions and fixed conversion factors, not live or rounded market data.