Convert Pounds per foot-hour to Slugs per foot-second
Convert Pounds per foot-hour (lb/(ft·h)) to Slugs per foot-second (slug/(ft·s)) instantly and accurately.
Conversion Formula
slug/(ft·s) = lb/(ft·h) × 8.633597270e-6
About Pounds per foot-hour
The pound per foot-hour (lb/(ft·h)) equals 0.45359237 / (0.3048 × 3600) ≈ 4.134×10⁻⁴ Pa·s. It appears in US heat-transfer and mass-transfer textbooks (e.g., McCabe, Smith & Harriott) where viscosity enters the Reynolds number using consistent hour-based units alongside BTU, ft, and lb quantities. Water at 20 °C is ≈2.42 lb/(ft·h). 1 lb/(ft·h) ≈ 4.134×10⁻⁴ Pa·s.
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
| Pounds per foot-hour (lb/(ft·h)) | Slugs per foot-second (slug/(ft·s)) |
|---|---|
| 1 lb/(ft·h) | 8.634 × 10-6 slug/(ft·s) |
| 2 lb/(ft·h) | 1.727 × 10-5 slug/(ft·s) |
| 5 lb/(ft·h) | 4.317 × 10-5 slug/(ft·s) |
| 10 lb/(ft·h) | 8.634 × 10-5 slug/(ft·s) |
| 25 lb/(ft·h) | 0.00021584 slug/(ft·s) |
| 50 lb/(ft·h) | 0.00043168 slug/(ft·s) |
| 100 lb/(ft·h) | 0.00086336 slug/(ft·s) |