Pressure
psftoTorr
Convert pounds-force per square foot (psf) to torr (Torr).
Factor1 psf = 0.3591315 Torr
Converter
psf
Accepts numbers or expressions, e.g. 150 + 14.7
Result
Torr
Rendered to 6 significant figures.
Formula
Formula
Torr = psf × 0.3591315
Multiply any value in pounds-force per square foot by 0.3591315 to obtain the value in torr.
Worked example
Convert 100 psf to Torr.
- 01Start with 100 psf.
- 02Multiply by the conversion factor: 100 × 0.3591315 = 35.9131 Torr.
Result100 psf = 35.9131 Torr
Conversion table
| psf | Torr |
|---|---|
| 1 | 0.35913 |
| 2 | 0.71826 |
| 5 | 1.7957 |
| 10 | 3.5913 |
| 20 | 7.1826 |
| 50 | 17.957 |
| 100 | 35.913 |
| 200 | 71.826 |
| 500 | 179.57 |
| 1000 | 359.13 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from psf to Torr?
1 psf equals 0.3591315 Torr. To convert, multiply the value in pounds-force per square foot by 0.3591315.
How do I convert 1 psf to Torr?
1 psf = 0.359131 Torr. For any value, multiply by 0.3591315.
How do I convert Torr back to psf?
Divide by the same factor — or equivalently, multiply by 2.784496. So 1 Torr = 2.7845 psf.
When would I need to convert pound-force per square foot to torr?
Pressure conversions between psf and Torr are common when working with mixed-vendor instrumentation, when piping codes use different units to process datasheets, or when converting field readings into SI for hydraulic calculations.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).