Convert Yards per pound to Nautical miles per pound
Convert Yards per pound (yd/lb) to Nautical miles per pound (nmi/lb) instantly and accurately.
Conversion Formula
nmi/lb = yd/lb × 0.0004937365011
About Yards per pound
The yard per pound (yd/lb) equals ≈2.016 × 10⁻³ km/kg, found in old British and US military propellant efficiency tables and pre-metric naval gunnery manuals. Range achieved per pound of cordite or smokeless powder was stated in yards. 1 yd/lb ≈2.016 × 10⁻³ km/kg ≈ 3 ft/lb.
About Nautical miles per pound
The nautical mile per pound (nmi/lb) equals ≈4.083 km/kg, the standard fuel efficiency unit in US and NATO aviation engineering. Range planning for US Navy, USAF, and FAA-certified aircraft uses nmi/lb or gallons/nmi; ICAO fuel planning worksheets include nmi/lb columns. Typical values: commercial turbofan 0.10-0.25 nmi/lb; turboprop commuter 0.08-0.15 nmi/lb. 1 nmi/lb ≈4.083 km/kg.
Quick Reference Table
| Yards per pound (yd/lb) | Nautical miles per pound (nmi/lb) |
|---|---|
| 1 yd/lb | 0.000493737 nmi/lb |
| 2 yd/lb | 0.000987473 nmi/lb |
| 5 yd/lb | 0.00246868 nmi/lb |
| 10 yd/lb | 0.00493737 nmi/lb |
| 25 yd/lb | 0.0123434 nmi/lb |
| 50 yd/lb | 0.0246868 nmi/lb |
| 100 yd/lb | 0.0493737 nmi/lb |