Convert Feet per pound to Yards per pound
Convert Feet per pound (ft/lb) to Yards per pound (yd/lb) instantly and accurately.
Conversion Formula
yd/lb = ft/lb × 0.3333333333
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 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.
Quick Reference Table
| Feet per pound (ft/lb) | Yards per pound (yd/lb) |
|---|---|
| 1 ft/lb | 0.333333 yd/lb |
| 2 ft/lb | 0.666667 yd/lb |
| 5 ft/lb | 1.66667 yd/lb |
| 10 ft/lb | 3.33333 yd/lb |
| 25 ft/lb | 8.33333 yd/lb |
| 50 ft/lb | 16.6667 yd/lb |
| 100 ft/lb | 33.3333 yd/lb |