Convert Feet per pound to Miles per pound
Convert Feet per pound (ft/lb) to Miles per pound (mi/lb) instantly and accurately.
Conversion Formula
mi/lb = ft/lb × 0.0001893939394
About Feet per pound
The foot per pound (ft/lb) equals ≈6.720 × 10⁻⁴ km/kg, the smallest practical mass-efficiency unit. It appears in historical US Army ballistic tables and early solid-propellant rocket motor test sheets where range was in feet and propellant charge in pounds. 1 ft/lb ≈6.720 × 10⁻⁴ km/kg ≈1/3 the size of a metre per pound.
About Miles per pound
The mile per pound (mi/lb) equals ≈3.548 km/kg, the traditional US aviation mass-efficiency unit. Cessna 172 on avgas: ≈0.28-0.32 mi/lb; Piper Cherokee: ≈0.30-0.35 mi/lb; Boeing 737 MAX per seat: ≈0.10-0.15 mi/lb. US military aircraft fuel efficiency analyses and early NASA propellant studies used mi/lb. 1 mi/lb ≈3.548 km/kg = 1.609344/0.45359237 km/kg.
Quick Reference Table
| Feet per pound (ft/lb) | Miles per pound (mi/lb) |
|---|---|
| 1 ft/lb | 0.000189394 mi/lb |
| 2 ft/lb | 0.000378788 mi/lb |
| 5 ft/lb | 0.00094697 mi/lb |
| 10 ft/lb | 0.00189394 mi/lb |
| 25 ft/lb | 0.00473485 mi/lb |
| 50 ft/lb | 0.0094697 mi/lb |
| 100 ft/lb | 0.0189394 mi/lb |