Atmospheres to Bar converter
Convert atmospheres (atm) to bar (bar) — results update instantly as you type.
Atmospheres to Bar
To
1 atm = 1.01325 bar
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How to convert Atmospheres to Bar
Pressure units vary by field: meteorologists use bar and pascals, tire gauges use PSI or bar, and scientists reference standard atmospheres. One standard atmosphere is exactly 101,325 pascals.
All units convert through the pascal, the SI unit equal to one newton per square meter. One bar is exactly 100,000 Pa and one PSI is about 6,894.76 Pa.
Formula
atm × 1.01325 = bar
Multiply your atmospheres value by 1.01325 to get bar. For the reverse, divide by the same factor.
Atmospheres to Bar conversion table
| Atmospheres | Bar |
|---|---|
| 1 atm | 1.01325 bar |
| 2 atm | 2.0265 bar |
| 5 atm | 5.06625 bar |
| 10 atm | 10.1325 bar |
| 25 atm | 25.33125 bar |
| 100 atm | 101.325 bar |
Common use cases
- Tire pressure between PSI and bar
- Weather reports in millibars (hPa)
- Scuba diving and depth pressure
- Engineering specifications across regions
Frequently asked questions
Most passenger cars recommend 30–35 PSI (about 2.1–2.4 bar). Check the sticker inside the driver's door for your vehicle's specification.