Kilograms to Carats Conversion (kg to ct)

Kilograms to Carats Converter

Enter the weight in kilograms below to convert it to carats.

Result in Carats:

1 kg = 5,000 ct

How to Convert Kilograms to Carats

To convert a measurement in kilograms to a measurement in carats, multiply the weight by the following conversion ratio: 5,000 carats/kilogram.

Since one kilogram is equal to 5,000 carats, you can use this simple formula to convert:

carats = kilograms × 5,000

The weight in carats is equal to the weight in kilograms multiplied by 5,000.

For example, here's how to convert 5 kilograms to carats using the formula above.

carats = (5 kg × 5,000) = 25,000 ct

How Many Carats Are in a Kilogram?

There are 5,000 carats in a kilogram, which is why we use this value in the formula above.

1 kg = 5,000 ct

Kilograms and carats are both units used to measure weight. Keep reading to learn more about each unit of measure.

What 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.

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.

Learn more about kilograms.

What Is a Carat?

The carat is a unit of mass/weight equal to 200 milligrams.^[2]

A carat is sometimes also referred to as a metric carat. Carats can be abbreviated as ct, and are also sometimes abbreviated as CD. For example, 1 carat can be written as 1 ct or 1 CD.

Learn more about carats.

Kilogram to Carat Conversion Table

Table showing various kilogram measurements converted to carats.
Kilograms	Carats
0.001 kg	5 ct
0.002 kg	10 ct
0.003 kg	15 ct
0.004 kg	20 ct
0.005 kg	25 ct
0.006 kg	30 ct
0.007 kg	35 ct
0.008 kg	40 ct
0.009 kg	45 ct
0.01 kg	50 ct
0.02 kg	100 ct
0.03 kg	150 ct
0.04 kg	200 ct
0.05 kg	250 ct
0.06 kg	300 ct
0.07 kg	350 ct
0.08 kg	400 ct
0.09 kg	450 ct
0.1 kg	500 ct
0.2 kg	1,000 ct
0.3 kg	1,500 ct
0.4 kg	2,000 ct
0.5 kg	2,500 ct
0.6 kg	3,000 ct
0.7 kg	3,500 ct
0.8 kg	4,000 ct
0.9 kg	4,500 ct
1 kg	5,000 ct

Table showing various kilogram measurements converted to carats.

Kilograms

Carats

0.001 kg

5 ct

0.002 kg

10 ct

0.003 kg

15 ct

0.004 kg

20 ct

0.005 kg

25 ct

0.006 kg

30 ct

0.007 kg

35 ct

0.008 kg

40 ct

0.009 kg

45 ct

0.01 kg

50 ct

0.02 kg

100 ct

0.03 kg

150 ct

0.04 kg

200 ct

0.05 kg

250 ct

0.06 kg

300 ct

0.07 kg

350 ct

0.08 kg

400 ct

0.09 kg

450 ct

0.1 kg

500 ct

0.2 kg

1,000 ct

0.3 kg

1,500 ct

0.4 kg

2,000 ct

0.5 kg

2,500 ct

0.6 kg

3,000 ct

0.7 kg

3,500 ct

0.8 kg

4,000 ct

0.9 kg

4,500 ct

1 kg

5,000 ct

References

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
National Institute of Standards and Technology, Precious Metals Conversion Information, https://www.nist.gov/pml/owm/laws-and-regulations/precious-metals-conversion