Torr to PSI (Torr to psi)
Result
0.0193367747 PSI
Formula
psi = Torr × 0.0193367747
1 Torr = 0.0193367747 psi, and 1 psi = 51.71493257 Torr.
The pascal is one newton per square metre. The bar is exactly 100,000 Pa, the standard atmosphere exactly 101,325 Pa, the torr exactly 1/760 atm, and psi is one pound-force per square inch (6,894.757 Pa).
Worked examples
- 1 Torr × 0.0193367747 = 0.019336775 psi
- 10 Torr × 0.0193367747 = 0.19336775 psi
- 100 Torr × 0.0193367747 = 1.9336775 psi
Common mistakes
- Tyre and compressor gauges read gauge pressure — pressure above the surrounding air. Absolute pressure is about 1 atm (14.7 psi, 1.013 bar) higher.
- Weather maps use hectopascals (1 hPa = 100 Pa = 1 millibar); standard sea-level pressure is 1,013.25 hPa.
- Torr and mmHg differ by less than one part per million and are interchangeable for practical purposes.
Torr to PSI table
| Torr (Torr) | PSI (psi) |
|---|---|
| 1 | 0.019336775 |
| 2 | 0.038673549 |
| 5 | 0.096683874 |
| 10 | 0.19336775 |
| 20 | 0.38673549 |
| 50 | 0.96683874 |
| 100 | 1.9336775 |
| 1,000 | 19.336775 |
The units
- Torr (Torr)
- 1 Torr = 133.3223684 Pascal.
- PSI (psi)
- Pound-force per square inch: 6,894.757293 Pa.
Sources for these factors
- The International System of Units (SI Brochure), 9th edition — BIPM
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy