Torr to Atmospheres Converter

To convert a measurement in torr to atmospheres, multiply the value by 0.001315789474. The conversion factor comes from the relationship between both units and the pascal.

For example, to convert 5 Torr to atmospheres: 5 × 0.001315789474 = 0.006578947368 atm.

A torr is a unit of pressure defined as 1/760 of a standard atmosphere, approximately equal to one millimeter of mercury (about 133.32 pascals). Named after Evangelista Torricelli, inventor of the barometer, the torr is used mainly in vacuum technology and laboratory work where low pressures are measured against a mercury column.

Common uses of torr include: Vacuum system measurements; Laboratory and analytical instruments; Semiconductor process chambers; Physiology and respiratory gas pressures.

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 Torr = 0.001315789474 atm 5 Torr = 0.006578947368 atm 10 Torr = 0.013157894737 atm 50 Torr = 0.065789473684 atm 100 Torr = 0.131578947368 atm