Convert Poises to Slugs per foot-second
Convert Poises (P) to Slugs per foot-second (slug/(ft·s)) instantly and accurately.
Conversion Formula
slug/(ft·s) = P × 0.002088543423
About Poises
The poise (P) equals 0.1 Pa·s (exact), defined in the CGS system as 1 g/(cm·s). Named after Jean Louis Marie Poiseuille, it was the dominant viscosity unit before SI adoption. Fluid-mechanics textbooks and older ASTM and API data tables still list viscosities in P. Motor oil at 100 °C is ≈0.02-0.05 P; water at 20 °C is ≈0.01 P (= 1 cP). 1 P = 0.1 Pa·s = 100 cP.
About Slugs per foot-second
The slug per foot-second (slug/(ft·s)) equals 1 lbf·s/ft² ≈ 47.880 Pa·s, the coherent FPS viscosity unit where force is in pound-force. It is used in US aerospace and hydraulic engineering when working with the slug as the unit of mass. Water at 20 °C has a viscosity of ≈2.09×10⁻⁵ slug/(ft·s); hydraulic fluid MIL-PRF-5606 is ≈3×10⁻⁴ slug/(ft·s) at 100 °F. 1 slug/(ft·s) ≈ 47.880 Pa·s.
Quick Reference Table
| Poises (P) | Slugs per foot-second (slug/(ft·s)) |
|---|---|
| 1 P | 0.00208854 slug/(ft·s) |
| 2 P | 0.00417709 slug/(ft·s) |
| 5 P | 0.0104427 slug/(ft·s) |
| 10 P | 0.0208854 slug/(ft·s) |
| 25 P | 0.0522136 slug/(ft·s) |
| 50 P | 0.104427 slug/(ft·s) |
| 100 P | 0.208854 slug/(ft·s) |