Convert Miles per pound to Feet per pound
Convert Miles per pound (mi/lb) to Feet per pound (ft/lb) instantly and accurately.
Conversion Formula
ft/lb = mi/lb × 5280
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.
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.
Quick Reference Table
| Miles per pound (mi/lb) | Feet per pound (ft/lb) |
|---|---|
| 1 mi/lb | 5280 ft/lb |
| 2 mi/lb | 10560 ft/lb |
| 5 mi/lb | 26400 ft/lb |
| 10 mi/lb | 52800 ft/lb |
| 25 mi/lb | 132000 ft/lb |
| 50 mi/lb | 264000 ft/lb |
| 100 mi/lb | 528000 ft/lb |