Pascals to Torr
An instant pascals-to-torr converter, with the formula and a reference table below.
| Pascals | Torr |
|---|---|
| 1 Pa | 0.007501 Torr |
| 2 Pa | 0.015001 Torr |
| 3 Pa | 0.022502 Torr |
| 5 Pa | 0.037503 Torr |
| 10 Pa | 0.075006 Torr |
| 25 Pa | 0.187515 Torr |
| 50 Pa | 0.375031 Torr |
| 100 Pa | 0.750062 Torr |
How to use
- Enter a value in the Pascals field.
- The Torr figure appears immediately — no button to press.
- Typing in the Torr field converts back to Pascals the same way.
- Use the reference table for the values that come up most often.
Pascals to Torr formula
To convert pascals to torr, multiply by 0.00750061683.
Torr = Pa × 0.00750061683
Why this factor: the pascal and the torr are both defined against the pascal, so dividing one definition by the other gives 0.00750061683 directly. Both definitions are set out in full below.
To go the other way, divide by 0.00750061683 — or use the Torr to Pascals converter, which is the same calculation reversed.
Worked example
Take 760 Pa and multiply by the factor 0.00750061683: the result is 5.700469 Torr.
760 Pa × 0.00750061683 = 5.700469 Torr
The converter above does this for any value you type, in either direction.
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.
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.
Pascals vs Torr
The pascal is an SI unit while the torr is a specialized 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 torr are in a pascal?
One pascal equals 0.00750061683 torr.
What is the formula to convert pascals to torr?
Multiply the number of pascals by 0.00750061683. To reverse it, divide by 0.00750061683 instead.
How do I convert torr back to pascals?
Divide by 0.00750061683, which is the same as multiplying by 133.322368.
How many torr are in 10 pascals?
10 Pa works out to 0.075006 Torr.
Is there anything to watch out for with pascals?
A single pascal is a very small pressure, which is why weather reports use hectopascals and engineering uses kilopascals.
How is the pascal defined?
Defined as 1 N/m². Named after Blaise Pascal.