Convert Feet per pound to Miles per kilogram
Convert Feet per pound (ft/lb) to Miles per kilogram (mi/kg) instantly and accurately.
Conversion Formula
mi/kg = ft/lb × 0.0004175421632
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 kilogram
The mile per kilogram (mi/kg) equals 1.609344 km/kg, used in academic hydrogen vehicle studies and some US-metric hybrid engineering databases. A Toyota Mirai at 140 km/kg H₂ ≈87 mi/kg; a propane bus at 5 km/kg LPG ≈3.1 mi/kg. 1 mi/kg = 1.609344 km/kg ≈1.609 km/kg.
Quick Reference Table
| Feet per pound (ft/lb) | Miles per kilogram (mi/kg) |
|---|---|
| 1 ft/lb | 0.000417542 mi/kg |
| 2 ft/lb | 0.000835084 mi/kg |
| 5 ft/lb | 0.00208771 mi/kg |
| 10 ft/lb | 0.00417542 mi/kg |
| 25 ft/lb | 0.0104386 mi/kg |
| 50 ft/lb | 0.0208771 mi/kg |
| 100 ft/lb | 0.0417542 mi/kg |