1 bar equals 0.986923 atm. To convert bar to atm, multiply the value by 0.986923; divide by 0.986923 to convert back. Enter any number above and the result appears instantly — free and entirely in your browser.
How do you convert bar to atm?
The conversion formula is atm = bar × 0.986923. The conversion factor is fixed by definition, so the result is always exact.
bar to atm conversion table
| bar | atm |
|---|---|
| 1 bar | 0.986923 atm |
| 2 bar | 1.97385 atm |
| 5 bar | 4.93462 atm |
| 10 bar | 9.86923 atm |
| 20 bar | 19.7385 atm |
| 50 bar | 49.3462 atm |
What is bar (bar)?
The bar is a metric pressure unit equal to exactly 100,000 pascals — very close to average air pressure at sea level. It is widely used across Europe for tyre pressure, weather reports and industrial systems.
What is atm (atm)?
The standard atmosphere (atm) is defined as exactly 101,325 pascals — roughly the average air pressure at sea level. It serves as a reference value in chemistry and physics.
Why convert bar to atm?
Pressure units differ by region and field: Europe uses bar, the US uses psi, science uses pascals and kilopascals, and medicine still uses mmHg. Converting between them is a daily need for mechanics, engineers and divers.
Standard atmospheric pressure is defined as exactly 101,325 Pa — equal to 1.01325 bar or 14.696 psi (BIPM/NIST). Car tyres are typically inflated to about 2.2–2.5 bar (32–36 psi).
How to convert bar to atm
- Enter the value in bar into the left field of the converter.
- Read the result in atm instantly in the right field — it updates automatically.
- Use the swap button to reverse the direction (atm to bar).
The converter runs entirely in your browser: no uploads, no queue, no limits. You can even use it offline.