Torr to Pascals
Convert torr to pascals instantly — one torr is 133.322 pascals.
| Torr | Pascals |
|---|---|
| 1 Torr | 133.322368 Pa |
| 2 Torr | 266.644737 Pa |
| 3 Torr | 399.967105 Pa |
| 5 Torr | 666.611842 Pa |
| 10 Torr | 1333.223684 Pa |
| 25 Torr | 3333.059211 Pa |
| 50 Torr | 6666.118421 Pa |
| 100 Torr | 13332.236842 Pa |
How to use
- Enter a value in the Torr field.
- The Pascals figure appears immediately — no button to press.
- Typing in the Pascals field converts back to Torr the same way.
- Use the reference table for the values that come up most often.
Torr to Pascals formula
Converting torr to pascals is a single multiplication by 133.322368.
Pa = Torr × 133.322368
Why this factor: the torr and the pascal are both defined against the pascal, so dividing one definition by the other gives 133.322368 directly. Both definitions are set out in full below.
To go the other way, divide by 133.322368 — or use the Pascals to Torr converter, which is the same calculation reversed.
Worked example
Given 100 Torr, multiplying by 133.322368 yields 13332.236842 Pa.
100 Torr × 133.322368 = 13332.236842 Pa
The converter above does this for any value you type, in either direction.
What is a torr?
A torr is a vacuum-measurement pressure unit, defined as one 760th of a standard atmosphere.
Definition: Exactly 101,325/760 pascals, which is about 133.3224 Pa. Named after Evangelista Torricelli.
Where it is used: Vacuum systems, mass spectrometry, and semiconductor process chambers.
Worth knowing: Almost identical to the mmHg but not exactly equal — they differ by about one part in seven million, which matters only in precision metrology.
What is a pascal?
The pascal is the SI unit of pressure — one newton of force spread over one square meter.
Definition: Defined as 1 N/m². Named after Blaise Pascal.
Where it is used: Scientific and engineering pressure calculations, and weather pressure in hectopascals.
Worth knowing: A single pascal is a very small pressure, which is why weather reports use hectopascals and engineering uses kilopascals.
Torr vs Pascals
The torr is a specialized unit while the pascal is an SI unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many pascals are in a torr?
One torr equals 133.322368 pascals.
What is the formula to convert torr to pascals?
Multiply the number of torr by 133.322368. To reverse it, divide by 133.322368 instead.
How do I convert pascals back to torr?
Divide by 133.322368, which is the same as multiplying by 0.00750061683.
How many pascals are in 10 torr?
10 Torr works out to 1333.223684 Pa.
Is there anything to watch out for with torr?
Almost identical to the mmHg but not exactly equal — they differ by about one part in seven million, which matters only in precision metrology.
How is the torr defined?
Exactly 101,325/760 pascals, which is about 133.3224 Pa. Named after Evangelista Torricelli.