Torr (Torr)
Exactly 1/760 of a standard atmosphere (about 133.322 pascals).
What is a torr?
- Symbol
- Torr
- Quantity
- Pressure
- Unit system
- other
- Definition
- Exactly 1/760 of a standard atmosphere (about 133.322 pascals).
- Exact
- Yes, the value is exact by definition
- Source
- NIST Special Publication 811 (2008), Appendix B.8
Common applications
Used for vacuum pressures in laboratories and the semiconductor industry.
Torr in other pressure units
- 1 Torr ≈ 133.3223684 PaPascal
- 1 Torr ≈ 1.333223684 hPaHectopascal
- 1 Torr ≈ 0.1333223684 kPaKilopascal
- 1 Torr ≈ 0.0001333223684 MPaMegapascal
- 1 Torr ≈ 1.333223684e-7 GPaGigapascal
- 1 Torr ≈ 1.333223684 mbarMillibar
- 1 Torr ≈ 0.001333223684 barBar
- 1 Torr ≈ 0.001315789474 atmStandard atmosphere
- 1 Torr ≈ 0.001359509806 atTechnical atmosphere
- 1 Torr ≈ 0.9999998575 mmHgMillimeter of mercury
- 1 Torr ≈ 0.0193367747 psiPound-force per square inch
- 1 Torr ≈ 0.0000193367747 ksiKilopound-force per square inch
Torr quick reference
| Torr | Bar | Pound-force per square inch | Pascal |
|---|---|---|---|
| 1 Torr | ≈ 0.001333223684 bar | ≈ 0.0193367747 psi | ≈ 133.3223684 Pa |
| 10 Torr | ≈ 0.01333223684 bar | ≈ 0.193367747 psi | ≈ 1333.223684 Pa |
| 100 Torr | ≈ 0.1333223684 bar | ≈ 1.93367747 psi | ≈ 13332.23684 Pa |
| 1000 Torr | ≈ 1.333223684 bar | ≈ 19.3367747 psi | ≈ 133322.3684 Pa |
Where the torr fits
The next smaller pressure unit is the hectopascal (hPa). 1 Torr ≈ 1.333223684 hPa, and 1 hPa ≈ 0.7500616827 Torr.
The next larger pressure unit is the millimeter of mercury (mmHg). 1 Torr ≈ 0.9999998575 mmHg, and 1 mmHg ≈ 1.000000142 Torr.
Frequently asked questions
- How many bars are in one torr?
- One torr ≈ 0.001333223684 bar (bars).
- How many psi are in one torr?
- One torr ≈ 0.0193367747 psi (psi).
- How many pascals are in one torr?
- One torr ≈ 133.3223684 Pa (pascals).