Convert Feet per pound to Nautical miles per kilogram
Convert Feet per pound (ft/lb) to Nautical miles per kilogram (nmi/kg) instantly and accurately.
Conversion Formula
nmi/kg = ft/lb × 0.0003628342198
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 Nautical miles per kilogram
The nautical mile per kilogram (nmi/kg) equals exactly 1.852 km/kg, used in aviation and maritime fuel performance analyses expressed in metric mass units. A large turbofan airliner achieves ≈0.15-0.25 nmi/kg of jet fuel per seat; a high-efficiency glider with a small auxiliary engine around 5-20 nmi/kg. 1 nmi/kg = 1.852 km/kg.
Quick Reference Table
| Feet per pound (ft/lb) | Nautical miles per kilogram (nmi/kg) |
|---|---|
| 1 ft/lb | 0.000362834 nmi/kg |
| 2 ft/lb | 0.000725668 nmi/kg |
| 5 ft/lb | 0.00181417 nmi/kg |
| 10 ft/lb | 0.00362834 nmi/kg |
| 25 ft/lb | 0.00907086 nmi/kg |
| 50 ft/lb | 0.0181417 nmi/kg |
| 100 ft/lb | 0.0362834 nmi/kg |