Pennyweight dwt
About the Pennyweight
The pennyweight is 24 grains, one twentieth of a troy ounce, exactly 1.55517384 grams. It was originally the weight of a silver penny in medieval England. Jewellers in the US still weigh scrap gold in pennyweights.
Related Units
Troy ounce
oz t31.1034768 g (480 grains, exact)
The troy ounce is 480 grains, exactly 31.1034768 grams, about 10 per cent heavier than the avoirdupois ounce. Gold...
Troy pound
lb t373.2417216 g (5760 grains, exact)
The troy pound is 12 troy ounces, exactly 373.2417216 grams, and so lighter than the avoirdupois pound of 16 smaller...
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...