Convert Slugs per foot-second to Poises
Convert Slugs per foot-second (slug/(ft·s)) to Poises (P) instantly and accurately.
Conversion Formula
P = slug/(ft·s) × 478.8025898
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.
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.
Quick Reference Table
| Slugs per foot-second (slug/(ft·s)) | Poises (P) |
|---|---|
| 1 slug/(ft·s) | 478.803 P |
| 2 slug/(ft·s) | 957.605 P |
| 5 slug/(ft·s) | 2394.01 P |
| 10 slug/(ft·s) | 4788.03 P |
| 25 slug/(ft·s) | 11970.1 P |
| 50 slug/(ft·s) | 23940.1 P |
| 100 slug/(ft·s) | 47880.3 P |