Viscosity
reyntolb/(ft·s)
Convert reynolds (lbf·s/in²) (reyn) to pounds per foot-second (lb/(ft·s)).
Factor1 reyn = 4633.063 lb/(ft·s)
Converter
reyn
Accepts numbers or expressions, e.g. 150 + 14.7
Result
lb/(ft·s)
Rendered to 6 significant figures.
Formula
Formula
lb/(ft·s) = reyn × 4633.063
Multiply any value in reynolds (lbf·s/in²) by 4633.063 to obtain the value in pounds per foot-second.
Worked example
Convert 1 reyn to lb/(ft·s).
- 01Start with 1 reyn.
- 02Multiply by the conversion factor: 1 × 4633.063 = 4633.06 lb/(ft·s).
Result1 reyn = 4633.06 lb/(ft·s)
Conversion table
| reyn | lb/(ft·s) |
|---|---|
| 1 | 4633.1 |
| 2 | 9266.1 |
| 5 | 23165 |
| 10 | 46331 |
| 20 | 92661 |
| 50 | 2.3165e+5 |
| 100 | 4.6331e+5 |
| 200 | 9.2661e+5 |
| 500 | 2.3165e+6 |
| 1000 | 4.6331e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from reyn to lb/(ft·s)?
1 reyn equals 4633.063 lb/(ft·s). To convert, multiply the value in reynolds (lbf·s/in²) by 4633.063.
How do I convert 1 reyn to lb/(ft·s)?
1 reyn = 4633.06 lb/(ft·s). For any value, multiply by 4633.063.
How do I convert lb/(ft·s) back to reyn?
Divide by the same factor — or equivalently, multiply by 0.0002158399. So 1 lb/(ft·s) = 0.00021584 reyn.
When would I need to convert reynolds (lbf·s/in²) to pound per foot-second?
Dynamic viscosity conversions between reyn and lb/(ft·s) 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).