Pressure
psftoinHg
Convert pounds-force per square foot (psf) to inches of mercury (0 °C) (inHg).
Factor1 psf = 0.01413903 inHg
Converter
psf
Accepts numbers or expressions, e.g. 150 + 14.7
Result
inHg
Rendered to 6 significant figures.
Formula
Formula
inHg = psf × 0.01413903
Multiply any value in pounds-force per square foot by 0.01413903 to obtain the value in inches of mercury (0 °C).
Worked example
Convert 100 psf to inHg.
- 01Start with 100 psf.
- 02Multiply by the conversion factor: 100 × 0.01413903 = 1.4139 inHg.
Result100 psf = 1.4139 inHg
Conversion table
| psf | inHg |
|---|---|
| 1 | 0.014139 |
| 2 | 0.028278 |
| 5 | 0.070695 |
| 10 | 0.14139 |
| 20 | 0.28278 |
| 50 | 0.70695 |
| 100 | 1.4139 |
| 200 | 2.8278 |
| 500 | 7.0695 |
| 1000 | 14.139 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from psf to inHg?
1 psf equals 0.01413903 inHg. To convert, multiply the value in pounds-force per square foot by 0.01413903.
How do I convert 1 psf to inHg?
1 psf = 0.014139 inHg. For any value, multiply by 0.01413903.
How do I convert inHg back to psf?
Divide by the same factor — or equivalently, multiply by 70.7262. So 1 inHg = 70.7262 psf.
When would I need to convert pound-force per square foot to inch of mercury (0 °C)?
Pressure conversions between psf and inHg 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).