This converter turns torr into pounds per square inch instantly, using the exact factor 1 torr = 0.0193367747 pounds per square inch. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
One millimetre of mercury, used in vacuum work. The dominant US pressure unit for tyres, plumbing and compressors.
Because the relationship is a simple proportion, one multiplication does the whole job. The table further down gives pre-computed values for the amounts people look up most often, and the result panel also reports the reverse conversion so you can check the figure both ways.
The formula
torr- The amount you are converting, measured in torr
0.0193367747- The exact number of pounds per square inch in one torr
pounds per square inch- The converted result
How it works, step by step
- Enter the number of torr you want to convert.
- The value is multiplied by 0.0193367747, the exact conversion factor.
- The result is displayed in pounds per square inch, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 torr
Multiply 5 by 0.019336775. That gives 0.096684 pounds per square inch. A quick sanity check: one torr is smaller than one pound per square inch, so the number should get smaller — and it does.
Converting 72 torr
72 × 0.019336775 = 1.3922 pounds per square inch. Working backwards, 1.3922 ÷ 0.019336775 returns 72 torr, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many pounds per square inch are in one torr?
Exactly 0.0193367747. Every conversion on this page is that single number multiplied by your input, so the result carries no rounding error beyond what is shown.
What is the formula to convert torr to pounds per square inch?
Pounds Per Square Inch = torr × 0.0193367747. To reverse it, divide instead: torr = pounds per square inch ÷ 0.0193367747, which is the same as multiplying by 51.71493257.
Is the torr bigger than the pound per square inch?
No. One torr is only 0.0193368 of a pound per square inch, so the pound per square inch is the larger unit.
Why does my answer differ slightly from other torr to psi converters?
Most differences come from rounding the factor too early. This tool keeps full double precision through the calculation and only rounds at the final display step, and it also shows the unrounded value so you can see exactly where any difference appears.
What is a torr?
One millimetre of mercury, used in vacuum work.
What is a pound per square inch?
The dominant US pressure unit for tyres, plumbing and compressors.
Torr to pounds per square inch reference table
| Torr | Pounds Per Square Inch |
|---|---|
| 0.5 Torr | 0.009668 psi |
| 1 Torr | 0.019337 psi |
| 2 Torr | 0.038674 psi |
| 3 Torr | 0.05801 psi |
| 5 Torr | 0.096684 psi |
| 10 Torr | 0.193368 psi |
| 15 Torr | 0.290052 psi |
| 20 Torr | 0.386735 psi |
| 25 Torr | 0.483419 psi |
| 50 Torr | 0.966839 psi |
| 75 Torr | 1.4503 psi |
| 100 Torr | 1.9337 psi |
| 250 Torr | 4.8342 psi |
| 500 Torr | 9.6684 psi |
| 1000 Torr | 19.3368 psi |
Exact factor: 1 torr = 0.0193367747 pounds per square inch. Values rounded for display.