Pressure
psftohPa
Convert pounds-force per square foot (psf) to hectopascals (hPa).
Factor1 psf = 0.4788026 hPa
Converter
psf
Accepts numbers or expressions, e.g. 150 + 14.7
Result
hPa
Rendered to 6 significant figures.
Formula
Formula
hPa = psf × 0.4788026
Multiply any value in pounds-force per square foot by 0.4788026 to obtain the value in hectopascals.
Worked example
Convert 100 psf to hPa.
- 01Start with 100 psf.
- 02Multiply by the conversion factor: 100 × 0.4788026 = 47.8803 hPa.
Result100 psf = 47.8803 hPa
Conversion table
| psf | hPa |
|---|---|
| 1 | 0.4788 |
| 2 | 0.95761 |
| 5 | 2.394 |
| 10 | 4.788 |
| 20 | 9.5761 |
| 50 | 23.94 |
| 100 | 47.88 |
| 200 | 95.761 |
| 500 | 239.4 |
| 1000 | 478.8 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from psf to hPa?
1 psf equals 0.4788026 hPa. To convert, multiply the value in pounds-force per square foot by 0.4788026.
How do I convert 1 psf to hPa?
1 psf = 0.478803 hPa. For any value, multiply by 0.4788026.
How do I convert hPa back to psf?
Divide by the same factor — or equivalently, multiply by 2.088543. So 1 hPa = 2.08854 psf.
When would I need to convert pound-force per square foot to hectopascal?
Pressure conversions between psf and hPa 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).