Bars to Atmospheres Converter

To convert a measurement in bars to atmospheres, multiply the value by 0.986923266716. The conversion factor comes from the relationship between both units and the pascal.

For example, to convert 5 bar to atmospheres: 5 × 0.986923266716 = 4.934616 atm.

A bar is a metric unit of pressure equal to exactly 100,000 pascals, roughly equal to atmospheric pressure at sea level. Introduced by Norwegian meteorologist Vilhelm Bjerknes, the bar takes its name from the Greek 'baros' (weight). Although not an SI unit, it remains popular in industry, diving, and weather because it is close to one atmosphere.

Common uses of bars include: Scuba diving depth and tank pressure; Industrial hydraulics and pneumatics; European tire and automotive pressure; Weather systems (via millibars).

A standard atmosphere (atm) is a unit of pressure defined as exactly 101,325 pascals, approximating average sea-level air pressure. Defined by the International Union of Pure and Applied Chemistry as a reference pressure, the atmosphere is widely used in chemistry and physics to describe conditions relative to sea level.

Common uses of atmospheres include: Chemistry reference conditions (STP); Diving and hyperbaric medicine; Physics gas-law calculations; Describing high-pressure environments.

Here are some common values converted:

1 bar = 0.986923266716 atm 5 bar = 4.934616 atm 10 bar = 9.869233 atm 50 bar = 49.346163 atm 100 bar = 98.692327 atm