Pound lb
About the Pound
The avoirdupois pound is defined as exactly 0.45359237 kilograms. The figure was chosen in the 1959 agreement as a compromise between the slightly different British and American pounds. Its abbreviation lb comes from the Roman libra, and one pound is 16 ounces or 7000 grains.
Related Units
Ounce
oz28.349523125 g (exact)
The avoirdupois ounce is one sixteenth of a pound, exactly 28.349523125 grams. It is distinct from the troy ounce of...
Grain
gr64.79891 mg (exact)
The grain is exactly 64.79891 milligrams and is the one unit shared by the avoirdupois, troy and apothecaries' systems...
Kilogram
kgBase unit; h = 6.62607015 × 10⁻³⁴ J·s exactly
The kilogram is defined by fixing the Planck constant at exactly 6.62607015 × 10⁻³⁴ joule-seconds. Until 20 May 2019 it...
Tonne
t1 t = 1000 kg (exact)
The tonne, or metric ton, is one thousand kilograms, equal to one megagram. It lies between the US short ton of...