Convert Yards per pound to Feet per pound
Convert Yards per pound (yd/lb) to Feet per pound (ft/lb) instantly and accurately.
Conversion Formula
ft/lb = yd/lb × 3
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 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
| Yards per pound (yd/lb) | Feet per pound (ft/lb) |
|---|---|
| 1 yd/lb | 3 ft/lb |
| 2 yd/lb | 6 ft/lb |
| 5 yd/lb | 15 ft/lb |
| 10 yd/lb | 30 ft/lb |
| 25 yd/lb | 75 ft/lb |
| 50 yd/lb | 150 ft/lb |
| 100 yd/lb | 300 ft/lb |