PSI to Torr
Convert psi to torr instantly. 1 psi = 51.7149325715 Torr. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert psi to torr
To convert psi to torr, multiply by 51.7149325715. The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
Torr = psi × 51.7149325715
PSI to Torr conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| PSI | Torr |
|---|---|
| 1 psi | 51.714933 Torr |
| 2 psi | 103.429865 Torr |
| 3 psi | 155.144798 Torr |
| 5 psi | 258.574663 Torr |
| 10 psi | 517.149326 Torr |
| 20 psi | 1,034.3 Torr |
| 25 psi | 1,292.87 Torr |
| 50 psi | 2,585.75 Torr |
| 100 psi | 5,171.49 Torr |
| 500 psi | 25,857.47 Torr |
| 1,000 psi | 51,714.93 Torr |
What is a psi?
Pounds per square inch, the US pressure unit for tyres and plumbing.
What is a torr?
One 760th of an atmosphere, near-identical to a millimetre of mercury.
The formula
Torr = psi × 51.7149325715
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the PSI to Torr
- Type the number of psi you want to convert.
- Read the result in torr straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked torr to psi page.
PSI to Torr — frequently asked questions
How many torr are in a psi?
One psi equals 51.7149325715 Torr. Torr = psi × 51.7149325715
What is the formula to convert psi to torr?
The formula is Torr = psi × 51.7149325715. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert torr back to psi?
Divide instead of multiplying: one torr is 0.0193367747 psi. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this psi to torr free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
This page answers each of these searches. They are the exact phrases visitors use to find the psi to torr.
- psi to torr
- 1 psi to torr
- how many torr in a psi
- psi2torr
- psi in torr
- psi to torr converter
- convert psi to torr
About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 19, 2026 · Calculation runs client-side · No data collected · Report an error