How many bar are in one atm?
One standard atmosphere equals exactly 1.01325 bar.
Convert Standard atmosphere (atm) to Bar (bar) instantly.
Calculation
value × 1.01325
| Quick Conversion | Converted |
|---|---|
| 1 atm | 1.01325 bar |
| 5 atm | 5.06625 bar |
| 10 atm | 10.1325 bar |
| 100 atm | 101.325 bar |
| 1,000 atm | 1,013.25 bar |
A standard atmosphere is a pressure unit defined as exactly 101,325 pascals.
The atmosphere unit became useful as a reference for average sea-level air pressure in science and education.
atm is used in chemistry, gas laws, diving references, laboratory work, classroom problems, and pressure comparisons.
A bar is a pressure unit equal to 100,000 pascals.
Bar became widely used because it is close to atmospheric pressure and convenient for many practical pressure ranges.
bar is used in compressors, pumps, hydraulics, industrial equipment, diving, process systems, and pressure gauges.
Mathematically, bar (bar) = standard atmosphere (atm) converted with the formula below.
1 atm = 1.01325 bar
1 bar = 0.986923 atm
Formula: value × 1.01325
Example: 15 atm = 15.19875 bar
Precision note: Use exactly 1.01325 bar per atm. Preserve decimals when converting values near one atmosphere.
1 atm = 1.01325 bar
1 bar = 0.986923 atm
| Standard atmosphere [atm] | Bar [bar] |
|---|---|
| 0.01 atm | 0.010133 bar |
| 0.1 atm | 0.101325 bar |
| 1 atm | 1.01325 bar |
| 2 atm | 2.0265 bar |
| 5 atm | 5.06625 bar |
| 10 atm | 10.1325 bar |
| 20 atm | 20.265 bar |
| 50 atm | 50.6625 bar |
| 100 atm | 101.325 bar |
One standard atmosphere equals exactly 1.01325 bar.
2 atm equals 2.0265 bar.
No. They are close, but one atm is slightly higher than one bar.