1 atm is equal to 760 torr.
- The atmospheric pressure(atm) is unit of the pressure within the atmosphere of Earth.
- At sea level the Earth's atmospheric pressure is 1 atm.
- The torr is an absolute-scale which is unit of pressure.
- The unit took its name from Evangelista Torricelli, an Italian physicist and mathematician who invented the barometer theory in 1644.

