Convert Feet per pound to Kilometres per pound
Convert Feet per pound (ft/lb) to Kilometres per pound (km/lb) instantly and accurately.
Conversion Formula
km/lb = ft/lb × 0.0003048
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 Kilometres per pound
The kilometre per pound (km/lb) equals ≈2.205 km/kg, common in US-to-metric cross-border transport analysis and fuel research papers where distances are in km but fuel invoices are weighed in pounds. A car burning 6 kg/100 km petrol gets ≈16.7 km/kg = 7.57 km/lb. 1 km/lb = 1/0.45359237 km/kg ≈2.205 km/kg.
Quick Reference Table
| Feet per pound (ft/lb) | Kilometres per pound (km/lb) |
|---|---|
| 1 ft/lb | 0.0003048 km/lb |
| 2 ft/lb | 0.0006096 km/lb |
| 5 ft/lb | 0.001524 km/lb |
| 10 ft/lb | 0.003048 km/lb |
| 25 ft/lb | 0.00762 km/lb |
| 50 ft/lb | 0.01524 km/lb |
| 100 ft/lb | 0.03048 km/lb |