Viscosity
Ptoreyn
Convert poise (P) to reynolds (lbf·s/in²) (reyn).
Factor1 P = 1.450377e-5 reyn
Converter
P
Accepts numbers or expressions, e.g. 150 + 14.7
Result
reyn
Rendered to 6 significant figures.
Formula
Formula
reyn = P × 1.450377e-5
Multiply any value in poise by 1.450377e-5 to obtain the value in reynolds (lbf·s/in²).
Worked example
Convert 100000 P to reyn.
- 01Start with 100000 P.
- 02Multiply by the conversion factor: 100000 × 1.450377e-5 = 1.45038 reyn.
Result100000 P = 1.45038 reyn
Conversion table
| P | reyn |
|---|---|
| 1 | 1.4504e-5 |
| 2 | 2.9008e-5 |
| 5 | 7.2519e-5 |
| 10 | 0.00014504 |
| 20 | 0.00029008 |
| 50 | 0.00072519 |
| 100 | 0.0014504 |
| 200 | 0.0029008 |
| 500 | 0.0072519 |
| 1000 | 0.014504 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from P to reyn?
1 P equals 1.450377e-5 reyn. To convert, multiply the value in poise by 1.450377e-5.
How do I convert 1 P to reyn?
1 P = 1.45038e-5 reyn. For any value, multiply by 1.450377e-5.
How do I convert reyn back to P?
Divide by the same factor — or equivalently, multiply by 68947.57. So 1 reyn = 68947.6 P.
When would I need to convert poise to reynolds (lbf·s/in²)?
Dynamic viscosity conversions between P and reyn 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).