How to convert atmospheres to torr
To convert a measurement in atmospheres to torr, multiply the value by 760. The conversion factor comes from the relationship between both units and the pascal.
For example, to convert 5 atm to torr: 5 × 760 = 3,800 Torr.
What is a atmosphere?
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.
What is a torr?
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.
Atmospheres to torr worked examples
Here are some common values converted:
1 atm = 760 Torr 5 atm = 3,800 Torr 10 atm = 7,600 Torr 50 atm = 38,000 Torr 100 atm = 76,000 Torr
Frequently asked questions
How many torr are in one atmosphere?
One atmosphere (atm) equals 760 torr (Torr). Multiply any value in atmospheres by 760 to convert to torr.
How do I convert atmospheres to torr?
Multiply the value in atmospheres by 760. For example, 5 atm × 760 = 3,800 Torr.
How do I convert torr to atmospheres?
Multiply the value in torr by 0.001315789474, or divide by 760. Use the swap button on the converter above to reverse the direction.
Is the atmosphere to torr conversion exact?
These conversions use standard SI-derived definitions. 1 atm = 101,325 Pa and 1 psi = 6,894.757 Pa exactly by definition.
What is the formula for atmospheres to torr?
The formula is: Torr = atm × 760. This comes from the definition of both units relative to the pascal.