Pressure
inHgtopsf
Convert inches of mercury (0 °C) (inHg) to pounds-force per square foot (psf).
Factor1 inHg = 70.7262 psf
Converter
inHg
Accepts numbers or expressions, e.g. 150 + 14.7
Result
psf
Rendered to 6 significant figures.
Formula
Formula
psf = inHg × 70.7262
Multiply any value in inches of mercury (0 °C) by 70.7262 to obtain the value in pounds-force per square foot.
Worked example
Convert 1 inHg to psf.
- 01Start with 1 inHg.
- 02Multiply by the conversion factor: 1 × 70.7262 = 70.7262 psf.
Result1 inHg = 70.7262 psf
Conversion table
| inHg | psf |
|---|---|
| 1 | 70.726 |
| 2 | 141.45 |
| 5 | 353.63 |
| 10 | 707.26 |
| 20 | 1414.5 |
| 50 | 3536.3 |
| 100 | 7072.6 |
| 200 | 14145 |
| 500 | 35363 |
| 1000 | 70726 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from inHg to psf?
1 inHg equals 70.7262 psf. To convert, multiply the value in inches of mercury (0 °C) by 70.7262.
How do I convert 1 inHg to psf?
1 inHg = 70.7262 psf. For any value, multiply by 70.7262.
How do I convert psf back to inHg?
Divide by the same factor — or equivalently, multiply by 0.01413903. So 1 psf = 0.014139 inHg.
When would I need to convert inch of mercury (0 °C) to pound-force per square foot?
Pressure conversions between inHg and psf 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).