Viscosity
Ptolb/(ft·hr)
Convert poise (P) to pounds per foot-hour (lb/(ft·hr)).
Factor1 P = 241.9088 lb/(ft·hr)
Converter
P
Accepts numbers or expressions, e.g. 150 + 14.7
Result
lb/(ft·hr)
Rendered to 6 significant figures.
Formula
Formula
lb/(ft·hr) = P × 241.9088
Multiply any value in poise by 241.9088 to obtain the value in pounds per foot-hour.
Worked example
Convert 1 P to lb/(ft·hr).
- 01Start with 1 P.
- 02Multiply by the conversion factor: 1 × 241.9088 = 241.909 lb/(ft·hr).
Result1 P = 241.909 lb/(ft·hr)
Conversion table
| P | lb/(ft·hr) |
|---|---|
| 1 | 241.91 |
| 2 | 483.82 |
| 5 | 1209.5 |
| 10 | 2419.1 |
| 20 | 4838.2 |
| 50 | 12095 |
| 100 | 24191 |
| 200 | 48382 |
| 500 | 1.2095e+5 |
| 1000 | 2.4191e+5 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from P to lb/(ft·hr)?
1 P equals 241.9088 lb/(ft·hr). To convert, multiply the value in poise by 241.9088.
How do I convert 1 P to lb/(ft·hr)?
1 P = 241.909 lb/(ft·hr). For any value, multiply by 241.9088.
How do I convert lb/(ft·hr) back to P?
Divide by the same factor — or equivalently, multiply by 0.004133789. So 1 lb/(ft·hr) = 0.00413379 P.
When would I need to convert poise to pound per foot-hour?
Dynamic viscosity conversions between P and lb/(ft·hr) are common in fluid characterisation, pump and control valve sizing, pipeline pressure-drop calculations, and lubrication engineering. Centipoise (cP) and mPa·s are the most widely used units in process datasheets; Pa·s is required for most simulation tools.
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).