Bars to Atmospheres converter

To convert bars to atmospheres, enter the value in the first field. The result in atmospheres is calculated automatically using the exact conversion factor.

1 bar ≈ 0.986923266716 atm
1 atm = 1.01325 bar

Formula: atm ≈ bar × 0.986923266716
bar = atm × 1.01325

Definitions: 1 bar = 100000 Pa; 1 atm = 101325 Pa

The bar equals exactly 100,000 pascals, which is very close to atmospheric pressure at sea level. It is used for tire and gas pressure in Europe, for scuba tanks (water adds about one bar per 10 meters of depth), and in hydraulics and boilers.

The standard atmosphere (atm) is exactly 101,325 pascals, the average air pressure at sea level. It is a reference pressure in chemistry and physics and is used to express high pressures as multiples of atmospheric pressure.

See the conversion table with commonly used values, handy for quick reference or study.