Torr to Atmospheres converter

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

1 Torr ≈ 0.00131578947368 atm
1 atm = 760 Torr

Formula: atm ≈ Torr × 0.00131578947368
Torr = atm × 760

Definitions: 1 Torr = 20265/152 Pa; 1 atm = 101325 Pa

The torr is 1/760 of a standard atmosphere, very close to the pressure of one millimeter of mercury. It is used in vacuum technology and physics, where pressures below atmospheric are given in torr or millitorr.

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.