Viscosity
reyntoP
Convert reynolds (lbf·s/in²) (reyn) to poise (P).
Factor1 reyn = 68947.57 P
Converter
reyn
Accepts numbers or expressions, e.g. 150 + 14.7
Result
P
Rendered to 6 significant figures.
Formula
Formula
P = reyn × 68947.57
Multiply any value in reynolds (lbf·s/in²) by 68947.57 to obtain the value in poise.
Worked example
Convert 1 reyn to P.
- 01Start with 1 reyn.
- 02Multiply by the conversion factor: 1 × 68947.57 = 68947.6 P.
Result1 reyn = 68947.6 P
Conversion table
| reyn | P |
|---|---|
| 1 | 68948 |
| 2 | 1.3790e+5 |
| 5 | 3.4474e+5 |
| 10 | 6.8948e+5 |
| 20 | 1.3790e+6 |
| 50 | 3.4474e+6 |
| 100 | 6.8948e+6 |
| 200 | 1.379e+7 |
| 500 | 3.4474e+7 |
| 1000 | 6.8948e+7 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from reyn to P?
1 reyn equals 68947.57 P. To convert, multiply the value in reynolds (lbf·s/in²) by 68947.57.
How do I convert 1 reyn to P?
1 reyn = 68947.6 P. For any value, multiply by 68947.57.
How do I convert P back to reyn?
Divide by the same factor — or equivalently, multiply by 1.450377e-5. So 1 P = 1.45038e-5 reyn.
When would I need to convert reynolds (lbf·s/in²) to poise?
Dynamic viscosity conversions between reyn and P 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).