Atmosphere to Bar Converter

An atmosphere (atm) is a unit of pressure defined as exactly 101,325 pascals, representing the average atmospheric pressure at sea level. It serves as a reference pressure for many scientific and engineering applications.

The atmosphere was originally defined as the pressure exerted by the Earth's atmosphere at sea level. It became a standard reference pressure in chemistry and physics, providing a convenient baseline for pressure measurements and calculations.

Atmospheres are used in chemistry, physics, and engineering as a reference pressure. They're standard for gas law calculations, chemical reaction conditions, and scientific applications where atmospheric pressure serves as a convenient reference.

A bar is a unit of pressure equal to 100,000 pascals (10⁵ Pa), approximately equal to atmospheric pressure at sea level. It's widely used in meteorology, engineering, and industrial applications as a practical pressure unit.

The bar was introduced in 1909 as a convenient unit close to atmospheric pressure. It became widely adopted in meteorology and engineering because it provided a practical scale for atmospheric and industrial pressure measurements.

Bars are extensively used in meteorology, industrial pressure systems, automotive applications, and engineering. They're standard for weather maps, industrial pressure gauges, automotive turbocharger specifications, and hydraulic system ratings.