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Pounds per Square Inch to Torr (psi to Torr) Converter

1 pounds per square inch (psi) = 51.7149 torr (Torr). To convert pounds per square inch to torr, multiply by 51.7149: 32 psi × 51.7149 = 1,654.88 Torr.

1 psi = 51.7149325715 Torr
Convert the other way: Torr to Pounds per Square Inch

Quick facts

How to convert pounds per square inch to torr

  1. Take the value in pounds per square inch.
  2. Multiply it by 51.7149 (the number of torr in one pounds per square inch).
  3. Round the result to the precision you need.
Torr = psi × 51.7149

Worked example (car tyre pressure): 32 psi × 51.7149 = 1654.88 Torr.

To convert torr back to pounds per square inch, multiply by 0.0193368, or divide by 51.7149.

Source: NIST SP 811 (2008), Appendix B.

Pounds per Square Inch to Torr conversion table

Pounds per Square Inch to Torr conversion table
Pounds per Square Inch [psi]Torr [Torr]
0.01 psi0.5171493257 Torr
0.1 psi5.1714932572 Torr
1 psi51.7149325715 Torr
2 psi103.429865143 Torr
3 psi155.1447977145 Torr
5 psi258.5746628575 Torr
10 psi517.1493257151 Torr
20 psi1034.2986514301 Torr
50 psi2585.7466285754 Torr
100 psi5171.4932571507 Torr
1000 psi51714.9325715071 Torr

psi to Torr chart from 1 to 100

Torr to Pounds per Square Inch conversion table

Torr to Pounds per Square Inch conversion table
Torr [Torr]Pounds per Square Inch [psi]
0.01 Torr0.0001933677 psi
0.1 Torr0.0019336775 psi
1 Torr0.0193367747 psi
2 Torr0.0386735494 psi
3 Torr0.0580103241 psi
5 Torr0.0966838735 psi
10 Torr0.193367747 psi
20 Torr0.3867354941 psi
50 Torr0.9668387352 psi
100 Torr1.9336774705 psi
1000 Torr19.3367747046 psi

Pounds per Square Inch vs Torr

Pounds per Square InchTorr
SymbolpsiTorr
Equals1 psi = 51.7149 Torr1 Torr = 0.0193368 psi

What is a pounds per square inch?

Force in pounds applied over one square inch. Used in the US for tire pressure and hydraulic systems.

What is a torr?

Approximately equal to one millimeter of mercury. Used in vacuum and laboratory pressure measurement.

Frequently asked questions

How many torr are in a pounds per square inch?

There are 51.7149 torr in 1 pounds per square inch (1 psi = 51.7149325715 Torr).

How many pounds per square inch are in a torr?

There are 0.0193368 pounds per square inch in 1 torr (1 Torr = 0.0193367747 psi).

How do I convert pounds per square inch to torr?

Multiply the number of pounds per square inch by 51.7149. For example, 10 psi × 51.7149 = 517.149 Torr. To convert back, multiply by 0.0193368.

What is 10 psi in torr?

10 psi = 517.149 Torr.

What is 100 psi in torr?

100 psi = 5,171.49 Torr.

Is the conversion exact?

Yes. The factor comes from the official definitions of both units (NIST SP 811 (2008), Appendix B). Results are shown to up to 10 decimal places; round them to suit your purpose.

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Reviewed by

Dr. Muhammad Amjad Khadim PhD Mathematics

Dr. Muhammad Amjad Khadim holds a PhD in Mathematics. He writes and reviews the guides on pakmath.com and checks every formula, conversion factor and worked example against published standards and official guidance before it goes live. Spotted an error? Tell us and it will be corrected.

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First published 28 October 2026 · Last reviewed 5 November 2026