Torr is a pressure unit used to express mechanical, atmospheric or process pressure values.
Named after Evangelista Torricelli, who invented the mercury barometer in 1643, the torr is defined as 1/760 of a standard atmosphere. It is common in vacuum technology.
Measurement system: SI, metric and practical engineering pressure usage. SI equivalent: 1 Torr = 133.322368421 Pa.
Torr facts
- Unit name
- Torr
- Symbol
- Torr
- Category
- Pressure
- Measurement system
- SI, metric and practical engineering pressure usage
- SI equivalent
- 1 Torr = 133.322368421 Pa
- Common uses
- Process systems, service gauges, scientific work and field measurements
Definition of the torr
Torr is a pressure unit used to express mechanical, atmospheric or process pressure values.
Measurement system and SI relationship
SI, metric and practical engineering pressure usage
SI equivalent: 1 Torr = 133.322368421 Pa
History of the torr
Named after Evangelista Torricelli, who invented the mercury barometer in 1643, the torr is defined as 1/760 of a standard atmosphere. It is common in vacuum technology.
Where is the torr used?
Process systems, service gauges, scientific work and field measurements