Weight Unit Conversion Calculators

To convert a unit of weight to another, metric or imperial, choose a unit to convert from.

What is weight

Weight is an object's relative mass and the force of gravity on an object. NASA explains that weight is the force generated by the gravitational attraction of the earth. Because the weight of an object is really the force of gravity on it, the weight of an object will be the same everywhere on Earth, but in space objects are weightless and the weight of an object on another planet with a different gravitational force will be different.

Scales are instruments that measure weight and vary in size from fitting into your pocket to being larger than a semi truck. Common measures of weight are tons, pounds, ounces, and grams. Tons, pounds, and ounces are imperial units of weight, and grams are metric units of weight. A ton is 2,000 pounds and a pound is 16 ounces. To convert between different measures of weight, including imperial and metric weight units, use the unit conversion tools above. The table below compares common units of weight.

Units of Weight Measurement

Units of weight include tons, pounds, ounces, metric tons, kilograms, grams, milligrams, and carats.

Common Weight Measurement Conversions

Tons to pounds weight conversion: 1 ton is equal to 2,000 pounds
Tons to metric tons weight conversion: 1 ton is equal to 0.907185 metric tons
Pounds to grams weight conversion: 1 pound is equal to 453.59237 grams
Pounds to kilograms weight conversion: 1 pound is equal to 0.453592 kilograms
Pounds to ounces weight conversion: 1 pound is equal to 16 ounces
Ounces to milligrams weight conversion: 1 ounce is equal to 28,350 milligrams

Weight Unit Conversion Table

Equivalent weight metric and imperial measurements
Convert From	Ton	Pound	Ounce	Metric Ton	Kilogram	Gram	Milligram	Carat
1 ton =	1 t	2,000 lb	32,000 oz	0.907185 T	907.18474 kg	907,185 g	907,184,740 mg	4,535,924 ct
1 pound =	0.0005 t	1 lb	16 oz	0.000454 T	0.453592 kg	453.59237 g	453,592 mg	2,268 ct
1 ounce =	0.00003125 t	0.0625 lb	1 oz	0.00002835 T	0.02835 kg	28.349523 g	28,350 mg	141.747616 ct
1 metric ton =	1.102311 t	2,205 lb	35,274 oz	1 T	1,000 kg	1,000,000 g	1,000,000,000 mg	5,000,000 ct
1 kilogram =	0.001102 t	2.204623 lb	35.273962 oz	0.001 T	1 kg	1,000 g	1,000,000 mg	5,000 ct
1 gram =	0.0000011023 t	0.002205 lb	0.035274 oz	0.0000010 T	0.001 kg	1 g	1,000 mg	5 ct
1 milligram =	0.0000000011023 t	0.0000022046 lb	0.000035274 oz	0.0000000010 T	0.0000010 kg	0.001 g	1 mg	0.005 ct
1 carat =	0.00000022046 t	0.000441 lb	0.007055 oz	0.00000020 T	0.0002 kg	0.2 g	200 mg	1 ct