Unit of Measure Conversions

Mass (weight) Conversions

INPUT value:

OUTPUT values

INPUT unit:	gram	g
	ounce	oz
	pound	lb
	kilogram	kg
	stone	stone
	hundredweight	cwt
	tonne	t
	long ton	ton

Messages:

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Additional Units and Information

* At conditions of maximum density: 4°C (39.2°F) and 1 atm pressure
Name	Symbol	Value	Description/Notes
carat	ct		A measure of the purity of gold, expressed as parts of gold in 24. E.g. 18 ct gold contains 18 parts in 24, having a "fineness" of 750
(metric) carat	ct	100 points; 200 milligrams	A measure of gemstone size
metric slug	hyl; mug; TME	9.80665 kilograms	Mass that accelerates at 1 m/s² when acted upon by 1 kgf
milligram	mg	1/1000 gram
quarter		2 stones; ¼ hundredweight
short ton		2,000 pounds
slug	sl	32.174 pounds	Mass that accelerates at 1 ft/s² when acted upon by 1 lbf
		10.0224 pounds	Mass of 1 UK gallon of pure water*
		1 kilogram	Mass of 1 litre of pure water*

Troy Weights

* Avoirdupois
Name	Symbol	Value	Description/Notes
grain	gr	0.064799 gram; 1/7000 pound*	15.432337 grains per gram; 437½ grains per ounce*
scruple		20 grains; 1.295978 grams
pennyweight	dwt	24 grains; 1.555174 grams; 1/20 troy ounce
drachm	dr	60 grains; 3 scruples; 3.887935 grams	Also called "dram"
troy ounce	ozt	480 grains; 24 scruples; 8 drachms; 31.103477 grams	1.097143 ounces*

Useful Approximations

Approximation	% Accuracy
1 kilogram ≈ 2.2 pounds	99.8
70 kilograms ≈ 11 stones	99.8
1 long ton ≈ 1 tonne	98.4