Enter a value in kilograms below to convert to another unit of weight.
The kilogram is a unit used to measure weight. Use one of the conversion calculators below to convert to another unit of measure, or read on to learn more about kilograms.
Kilogram Conversion Calculators
Choose a unit of weight to convert to.
Kilogram Definition and Usage
The 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 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 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?
If you're here, then there's a good chance you might be wondering just how much is a kilogram? One kilogram is equal to 1000 grams or 2.204623 pounds.
The chart below shows how much a kilogram is in other measures of weight.
|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|
- International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf