Pressure / Torr → psi
Convert Torr to Pounds-force per square inch
Convert pressure differences or absolute pressures between consistent units. Convert Torr (Torr) to Pounds-force per square inch (psi). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Pounds-force per square inch to Torr →
How to convert torr to pounds-force per square inch
This changes units only. Gauge and absolute pressures need a known ambient pressure to relate them; the converter does not add atmospheric pressure.
Use x for the value in Torr, b for the intermediate value in Pa, and y for the result in psi.
psi = Torr × 133.32236842105263 ÷ 6894.757293168361
Worked examples
10 Torr ≈ 0.193367747046 psi
Step 1: (10 × 133.322368421) ≈ 1333.22368421 Pa.
Step 2: 1333.22368421 ÷ 6894.75729317 ≈ 0.193367747046 psi.20 Torr ≈ 0.386735494092 psi
Step 1: (20 × 133.322368421) ≈ 2666.44736842 Pa.
Step 2: 2666.44736842 ÷ 6894.75729317 ≈ 0.386735494092 psi.
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Torr
Torr (Torr) measures pressure under the conventions above. The base value in Pa is (x × 133.322368421), where x is the numerical value in Torr. Factors shown here are rounded for display; calculations use the stored factor.
About Pounds-force per square inch
Pounds-force per square inch (psi) measures pressure under the conventions above. The base value in Pa is (x × 6894.75729317), where x is the numerical value in psi. Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
Carry the same physical assumptions into subsequent physics calculations.
Torr to pounds-force per square inch reference table
| Torr (Torr) | Pounds-force per square inch (psi) |
|---|---|
| 1 | 0.0193367747046 |
| 5 | 0.0966838735231 |
| 10 | 0.193367747046 |
| 25 | 0.483419367616 |
| 50 | 0.966838735231 |
| 100 | 1.93367747046 |
| 1000 | 19.3367747046 |
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