Kilogram (kg) Weight Conversion Calculator

Kilogram Conversion Calculator

Enter a value in kilograms below to convert to another unit of weight.

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What Is a Kilogram?

A kilogram is a unit used to measure weight.

The kilogram, or kilogramme, is the SI base unit for weight and is also a multiple of the gram. In the metric system, "kilo" is the prefix for thousands, or 10³. Kilograms can be abbreviated as kg; for example, 1 kilogram can be written as 1 kg.

Background and Origin

Originally, the kilogram was defined in 1793 as the mass equal to one cubic decimeter of water and was adopted by France as the base unit of mass.

It was later adopted for use internationally, but in 1889 it was redefined as the mass equal to that of a platinum-iridium bar called the International Prototype Kilogram. For a period of time, the kilogram was the only unit in the international system of measures that is defined using a physical artifact.

In 2019 the kilgoram was redefined again using the Planck constant, meters, and seconds, removing the dependence on a physical artifact for the definition.

How Much Is a Kilogram?

One kilogram is equal to 1,000 grams, 2.204623 pounds, or 1/1,000 of a metric ton.

The formal definition of the kilogram changed in 2019. One kilogram was previously equal to the mass of the platinum-iridium bar, known as the International Prototype of the Kilogram, which was stored in Sèvres, France.

The 2019 SI brochure now defines the kilogram using the Planck constant, and it is defined using the meter and second.^[1] It is equal to the mass of 1,000 cubic centimeters, or milliliters, of water.

How to Convert Kilograms

To convert kilograms to another unit of weight, you need to multiply the value by a conversion factor. A conversion factor is a numerical value used to change the units of a measurement without changing the value.^[2]

You can find the conversion factors for kilograms in the conversion table below.

Then, multiply the weight measurement by the conversion factor to find the equivalent value in the desired unit of measurement.

kilograms × conversion factor = result

You can also use a calculator, such as one of the converters below, for the conversion.

Kilogram Conversion Table

Common kilogram values and equivalent imperial and metric weight measurements
kilograms	tons	pounds	ounces	metric tons	grams	milligrams	calories	stones	long tons	carats
1 kg	0.001102 t	2.204623 lb	35.273962 oz	0.001 t	1,000 g	1,000,000 mg	7,716 kcal	0.157473 st	0.000984 lt	5,000 ct
2 kg	0.002205 t	4.409245 lb	70.547924 oz	0.002 t	2,000 g	2,000,000 mg	15,432 kcal	0.314946 st	0.001968 lt	10,000 ct
3 kg	0.003307 t	6.613868 lb	105.821886 oz	0.003 t	3,000 g	3,000,000 mg	23,149 kcal	0.472419 st	0.002953 lt	15,000 ct
4 kg	0.004409 t	8.81849 lb	141.095848 oz	0.004 t	4,000 g	4,000,000 mg	30,865 kcal	0.629892 st	0.003937 lt	20,000 ct
5 kg	0.005512 t	11.023113 lb	176.36981 oz	0.005 t	5,000 g	5,000,000 mg	38,581 kcal	0.787365 st	0.004921 lt	25,000 ct
6 kg	0.006614 t	13.227736 lb	211.643772 oz	0.006 t	6,000 g	6,000,000 mg	46,297 kcal	0.944838 st	0.005905 lt	30,000 ct
7 kg	0.007716 t	15.432358 lb	246.917734 oz	0.007 t	7,000 g	7,000,000 mg	54,013 kcal	1.102311 st	0.006889 lt	35,000 ct
8 kg	0.008818 t	17.636981 lb	282.191696 oz	0.008 t	8,000 g	8,000,000 mg	61,729 kcal	1.259784 st	0.007874 lt	40,000 ct
9 kg	0.009921 t	19.841604 lb	317.465658 oz	0.009 t	9,000 g	9,000,000 mg	69,446 kcal	1.417257 st	0.008858 lt	45,000 ct
10 kg	0.011023 t	22.046226 lb	352.739619 oz	0.01 t	10,000 g	10,000,000 mg	77,162 kcal	1.57473 st	0.009842 lt	50,000 ct
11 kg	0.012125 t	24.250849 lb	388.013581 oz	0.011 t	11,000 g	11,000,000 mg	84,878 kcal	1.732203 st	0.010826 lt	55,000 ct
12 kg	0.013228 t	26.455471 lb	423.287543 oz	0.012 t	12,000 g	12,000,000 mg	92,594 kcal	1.889677 st	0.01181 lt	60,000 ct
13 kg	0.01433 t	28.660094 lb	458.561505 oz	0.013 t	13,000 g	13,000,000 mg	100,310 kcal	2.04715 st	0.012795 lt	65,000 ct
14 kg	0.015432 t	30.864717 lb	493.835467 oz	0.014 t	14,000 g	14,000,000 mg	108,027 kcal	2.204623 st	0.013779 lt	70,000 ct
15 kg	0.016535 t	33.069339 lb	529.109429 oz	0.015 t	15,000 g	15,000,000 mg	115,743 kcal	2.362096 st	0.014763 lt	75,000 ct
16 kg	0.017637 t	35.273962 lb	564.383391 oz	0.016 t	16,000 g	16,000,000 mg	123,459 kcal	2.519569 st	0.015747 lt	80,000 ct
17 kg	0.018739 t	37.478585 lb	599.657353 oz	0.017 t	17,000 g	17,000,000 mg	131,175 kcal	2.677042 st	0.016732 lt	85,000 ct
18 kg	0.019842 t	39.683207 lb	634.931315 oz	0.018 t	18,000 g	18,000,000 mg	138,891 kcal	2.834515 st	0.017716 lt	90,000 ct
19 kg	0.020944 t	41.88783 lb	670.205277 oz	0.019 t	19,000 g	19,000,000 mg	146,607 kcal	2.991988 st	0.0187 lt	95,000 ct
20 kg	0.022046 t	44.092452 lb	705.479239 oz	0.02 t	20,000 g	20,000,000 mg	154,324 kcal	3.149461 st	0.019684 lt	100,000 ct