Convert Torr to Pascal
1 torr = 133.3224 pascal (Pa). For example, 10 torr = 1,333.224 pascal and 100 torr = 13,332.24 pascal. Type any value below to convert torr to pascal both ways — it runs entirely in your browser.
Quick answer: Torr to Pascal
1 Torr = 133.3224 Pascal (Torr → Pa). To convert torr to pascal, multiply by 133.3224. To convert pascal to torr, multiply by 0.007500617. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common torr-to-pascal questions.
How to convert Torr to Pascal
To convert torr to pascal, multiply the number of torr by the conversion factor 133.3224, because 1 Torr = 133.3224 Pa. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 Pa = 0.007500617 Torr, so you divide by 133.3224 (or multiply by 0.007500617) to turn pascal back into torr.
Pa = Torr × 133.3224 ·
Torr = Pa × 0.007500617
- Write down the value you want to convert, in torr.
- Multiply it by 133.3224.
- The result is the same area/length/quantity expressed in pascal.
Torr to Pascal — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 torr is 666.6118 pascal because 5 Torr × 133.3224 = 666.6118 Pa.
| Torr | Calculation | Pascal |
|---|---|---|
| 1 Torr | 1 Torr × 133.3224 = 133.3224 Pa | 133.3224 Pa |
| 2 Torr | 2 Torr × 133.3224 = 266.6447 Pa | 266.6447 Pa |
| 3 Torr | 3 Torr × 133.3224 = 399.9671 Pa | 399.9671 Pa |
| 5 Torr | 5 Torr × 133.3224 = 666.6118 Pa | 666.6118 Pa |
| 7 Torr | 7 Torr × 133.3224 = 933.2566 Pa | 933.2566 Pa |
| 10 Torr | 10 Torr × 133.3224 = 1,333.224 Pa | 1,333.224 Pa |
| 12 Torr | 12 Torr × 133.3224 = 1,599.868 Pa | 1,599.868 Pa |
| 15 Torr | 15 Torr × 133.3224 = 1,999.836 Pa | 1,999.836 Pa |
| 20 Torr | 20 Torr × 133.3224 = 2,666.447 Pa | 2,666.447 Pa |
| 25 Torr | 25 Torr × 133.3224 = 3,333.059 Pa | 3,333.059 Pa |
| 50 Torr | 50 Torr × 133.3224 = 6,666.118 Pa | 6,666.118 Pa |
| 100 Torr | 100 Torr × 133.3224 = 13,332.24 Pa | 13,332.24 Pa |
Common Torr to Pascal conversions
These are the torr-to-pascal values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 torr = 133.3224 pascal
- 2 torr = 266.6447 pascal
- 2.5 torr = 333.3059 pascal
- 3 torr = 399.9671 pascal
- 4 torr = 533.2895 pascal
- 5 torr = 666.6118 pascal
- 6 torr = 799.9342 pascal
- 7 torr = 933.2566 pascal
- 8 torr = 1,066.579 pascal
- 9 torr = 1,199.901 pascal
- 10 torr = 1,333.224 pascal
- 12 torr = 1,599.868 pascal
- 15 torr = 1,999.836 pascal
- 20 torr = 2,666.447 pascal
- 25 torr = 3,333.059 pascal
- 30 torr = 3,999.671 pascal
- 50 torr = 6,666.118 pascal
- 75 torr = 9,999.178 pascal
- 100 torr = 13,332.24 pascal
- 200 torr = 26,664.47 pascal
- 500 torr = 66,661.18 pascal
- 1000 torr = 133,322.4 pascal
Torr to Pascal conversion chart (both directions)
The chart below converts torr to pascal and pascal to torr side by side, so it works whichever way you need. 1 torr = 133.3224 pascal, and 1 pascal = 0.007500617 torr.
| Torr → Pascal | Pascal → Torr |
|---|---|
| 0.25 Torr = 33.33059 Pa | 0.25 Pa = 0.001875154 Torr |
| 0.5 Torr = 66.66118 Pa | 0.5 Pa = 0.003750308 Torr |
| 1 Torr = 133.3224 Pa | 1 Pa = 0.007500617 Torr |
| 2 Torr = 266.6447 Pa | 2 Pa = 0.01500123 Torr |
| 3 Torr = 399.9671 Pa | 3 Pa = 0.02250185 Torr |
| 4 Torr = 533.2895 Pa | 4 Pa = 0.03000247 Torr |
| 5 Torr = 666.6118 Pa | 5 Pa = 0.03750308 Torr |
| 6 Torr = 799.9342 Pa | 6 Pa = 0.0450037 Torr |
| 7 Torr = 933.2566 Pa | 7 Pa = 0.05250432 Torr |
| 8 Torr = 1,066.579 Pa | 8 Pa = 0.06000493 Torr |
| 9 Torr = 1,199.901 Pa | 9 Pa = 0.06750555 Torr |
| 10 Torr = 1,333.224 Pa | 10 Pa = 0.07500617 Torr |
| 12 Torr = 1,599.868 Pa | 12 Pa = 0.0900074 Torr |
| 15 Torr = 1,999.836 Pa | 15 Pa = 0.1125093 Torr |
| 20 Torr = 2,666.447 Pa | 20 Pa = 0.1500123 Torr |
| 25 Torr = 3,333.059 Pa | 25 Pa = 0.1875154 Torr |
| 30 Torr = 3,999.671 Pa | 30 Pa = 0.2250185 Torr |
| 40 Torr = 5,332.895 Pa | 40 Pa = 0.3000247 Torr |
| 50 Torr = 6,666.118 Pa | 50 Pa = 0.3750308 Torr |
| 75 Torr = 9,999.178 Pa | 75 Pa = 0.5625463 Torr |
| 100 Torr = 13,332.24 Pa | 100 Pa = 0.7500617 Torr |
| 150 Torr = 19,998.36 Pa | 150 Pa = 1.125093 Torr |
| 200 Torr = 26,664.47 Pa | 200 Pa = 1.500123 Torr |
| 250 Torr = 33,330.59 Pa | 250 Pa = 1.875154 Torr |
| 500 Torr = 66,661.18 Pa | 500 Pa = 3.750308 Torr |
| 1000 Torr = 133,322.4 Pa | 1000 Pa = 7.500617 Torr |
Torr vs Pascal: which is bigger?
A torr is the larger unit: one torr equals 133.3224 pascals. Put another way, you need 133.3224 pascals to make a single torr.
What is a Torr? History, origin and usage
The torr honours Evangelista Torricelli, who built the first mercury barometer in 1643 and correctly explained that the column was held up by the weight of the air outside. The unit was named in the 1940s, and was defined as exactly one 760th of a standard atmosphere so that it would be tied to a fixed number rather than to the behaviour of real mercury.
Torr is the working unit of vacuum technology — vacuum pumps, freeze dryers, electron microscopes, semiconductor process chambers and mass spectrometers are all specified in torr or its subdivisions.
Because it is defined as a 760th of an atmosphere, 760 torr is one atmosphere exactly, by construction. It is very nearly the same as a millimetre of mercury but not exactly: the two differ by about one part in seven million, a gap that matters only in precision metrology and is the reason careful documents never treat the two names as interchangeable.
What is a Pascal? History, origin and usage
The pascal is named after Blaise Pascal, who in 1648 had his brother-in-law carry a mercury barometer up the Puy de Dôme in central France and watch the mercury column fall as he climbed. That experiment showed air has weight and that the pressure it exerts drops with height. The unit itself is much younger: the name was adopted by the General Conference on Weights and Measures in 1971, replacing the older habit of writing pressures as "newtons per square metre".
The pascal is the SI unit of pressure and the base every other unit on this page is defined against. On its own it is awkwardly small for daily life — a sheet of paper resting on a table presses down with only a few pascals — so real-world figures are almost always given with a prefix: hectopascals for weather, kilopascals for tyres and gas, megapascals for concrete and hydraulics.
One pascal is one newton spread over one square metre, which is about the pressure of a five-rupee coin lying flat on a table. Because pressure is force divided by area, the same push concentrated into a smaller area gives a much higher pressure — which is why a drawing pin goes into a wall and your thumb does not.
Convert 1 Torr to other units
It can help to see a torr next to the other units it is commonly compared with. One torr (Torr) is equal to:
| 1 Torr equals | Unit |
|---|---|
| 133.3224 Pa | Pascal |
| 1.333224 hPa | Hectopascal |
| 0.1333224 kPa | Kilopascal |
| 0.0001333224 MPa | Megapascal |
| 1.333224 mbar | Millibar |
| 0.001333224 bar | Bar |
| 0.001315789 atm | Standard atmosphere |
| 0.9999999 mmHg | Millimetre of mercury |
| 0.03937007 inHg | Inch of mercury |
| 13.5951 mmH₂O | Millimetre of water |
| 0.5352401 inH₂O | Inch of water |
| 0.01933677 psi | Pound per square inch |
| 0.00135951 kgf/cm² | Kilogram-force per square centimetre |
Convert 1 Pascal to other units
One pascal (Pa) is equal to:
| 1 Pascal equals | Unit |
|---|---|
| 0.01 hPa | Hectopascal |
| 0.001 kPa | Kilopascal |
| 0.000001 MPa | Megapascal |
| 0.01 mbar | Millibar |
| 0.00001 bar | Bar |
| 0.000009869233 atm | Standard atmosphere |
| 0.007500617 Torr | Torr |
| 0.007500616 mmHg | Millimetre of mercury |
| 0.0002952998 inHg | Inch of mercury |
| 0.1019716 mmH₂O | Millimetre of water |
| 0.004014631 inH₂O | Inch of water |
| 0.0001450377 psi | Pound per square inch |
| 0.00001019716 kgf/cm² | Kilogram-force per square centimetre |
Tips for converting Torr to Pascal
- To go from torr to pascal, multiply by 133.3224; to go back, divide by 133.3224 (or multiply by 0.007500617).
- For a quick mental estimate, remember that 1 torr ≈ 133.3224 pascal, so 10 torr ≈ 1,333.224 pascal.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this Torr to Pascal converter
Type a number into the Torr field and the equivalent in Pascal appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Pascal field to convert the other way (pascal to torr). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 Torr = 133.3224 Pa), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for torr-to-pascal conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
Sources
- BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.
- NIST — Definitions of the SI base units — the US National Institute of Standards and Technology reference for the SI base units, used here as an independent cross-check on the base-unit definition.
Pressure factors here come from fixed definitions, anchored to the pascal: a bar is exactly 100,000 Pa, one atmosphere is exactly 101,325 Pa, a torr is exactly a 760th of an atmosphere, and psi is built from the exact pound and the exact inch. Two of them — psi and the torr — work out to decimals that repeat forever, so where a number is shown rounded it is marked, not quietly trimmed.
Frequently asked questions
- How many pascal are in 1 torr?
- 1 torr = 133.3224 pascal (Pa). To convert any number of torr to pascal, multiply by 133.3224.
- How do I convert torr to pascal?
- Multiply the number of torr by 133.3224. For example, 10 torr = 10 × 133.3224 = 1,333.224 pascal, and 25 torr = 3,333.059 pascal.
- How many torr are in 1 pascal?
- 1 pascal = 0.007500617 torr. So to convert pascal back to torr, multiply by 0.007500617.
- What is the formula to convert torr to pascal?
- pascal = torr × 133.3224. The reverse formula is torr = pascal × 0.007500617.
- How much is 100 torr in pascal?
- 100 torr = 13,332.24 pascal. (And 1000 torr = 133,322.4 pascal.)
- Which is bigger, a torr or a pascal?
- A torr is larger: 1 torr = 133.3224 pascal.
- Is this torr to pascal converter accurate?
- Yes — every value is computed from the exact 133.3224 Pa per Torr factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert pascal to torr too?
- Yes. The converter works both ways — enter a value in either field. 1 pascal = 0.007500617 torr.