A torr is 1/760 standard atmosphere.
Torrs to Pascals Converter — Torr to Pa
Convert Torr (Torr) to Pascal (Pa) using the exact conversion factor (1 torr = 133.3223684 pascal). See the formula, worked examples, conversion table, history, and common uses.
Torrs to Pascals converter
Converter
Pressure Converter
Convert pascals, bars, PSI, atmospheres, mercury columns, water columns, and engineering pressure units.
Context values
Some unit families need one extra value for a physically accurate result.
The pascal is one newton per square meter.
Result = input x 133.3223684 / 1.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Torrs to Pascals
Torr and Pascal both show up on pressure gauges — psi is standard on US tire and tool specifications, while bar is the everyday pressure unit across most of the rest of the world. Specifically: A torr is 1/760 standard atmosphere, and the pascal is one newton per square meter.
Formula
pascals = torrs × 133.322368421
This factor comes from each unit's defined relationship to the category's base unit: 1 torr equals 133.322368421 base units, and 1 pascal equals 1 base unit, so dividing one by the other gives the direct torr-to-pascal factor of 133.322368421.
Simple example
1 Torr × 133.3223684 = 133.3223684 Pa
1 torr = 133.3223684 pascals.
Real-world example
35 Torr × 133.3223684 = 4,666.282895 Pa
35 torrs = 4,666.282895 pascals.
Conversion table
| Torr (Torr) | Pascal (Pa) |
|---|---|
| 1 Torr | 133.3223684 Pa |
| 5 Torr | 666.6118421 Pa |
| 10 Torr | 1,333.223684 Pa |
| 25 Torr | 3,333.059211 Pa |
| 50 Torr | 6,666.118421 Pa |
| 100 Torr | 13,332.23684 Pa |
Reverse conversion: Pascal to Torr
133.3223684 Pa × 0.007500616827 = 0.9999999998 Torr
133.3223684 pascals = 0.9999999998 torrs.
torrs = pascals × 0.00750061682704
For a page dedicated to this direction, see Pascal to Torr.
Understanding the Torr (Torr)
A torr is 1/760 standard atmosphere.
Understanding the Pascal
Pascal (Pa) measures pressure. The pascal is the SI derived unit of pressure: one newton of force per square meter. It is classified as a SI derived unit.
Where it's used: Standard scientific pressure unit worldwide
Uses of the Pascal today
- Scientific and engineering pressure measurement worldwide
- Meteorology (often as hectopascals, equivalent to millibars)
- Material science (stress and strength, typically in megapascals)
History of the Pascal
The pascal is named after Blaise Pascal, whose 17th-century experiments clarified the physics of fluid pressure and vacuum. It was adopted as the SI derived unit of pressure in 1971, replacing the older, non-coherent CGS pressure units used in much scientific work up to that point.
Historical origin. Pascal was not the invention of a single named person; it developed through the process described above.
Pascal — sources
- BIPM SI Brochure — Coherent derived units — Defines the pascal as the SI unit of pressure.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pascals are in 1 torr?
1 torr equals 133.3223684 pascals, using the exact defined conversion factor rather than an estimate.
How do I convert torr to pascal?
Multiply the torr value by 133.3223684. The converter above does this instantly to whatever precision you set.
How do I convert pascal back to torr?
Use the reverse factor: 1 pascal equals 0.0075006168 torrs. You can also use the swap control in the converter above to flip the direction instantly.
What is a torr?
Torr (Torr) is a unit of pressure.
What is a pascal?
Pascal (Pa) measures pressure. The pascal is the SI derived unit of pressure: one newton of force per square meter. It is classified as a SI derived unit.
Is the torr to pascal conversion exact?
Yes. Both torr and pascal are defined by fixed standards rather than physical artifacts, so the factor of 133.3223684 used above is exact to as many digits as you choose to display.