Carats to Kilograms Converter

1 carat (ct) equals 0.0002 kilograms (kg).

Quick answer

  • 1 carat = 0.0002 kilograms
  • 1 kilogram = 5,000 carats
  • Formula: kg = ct ÷ 5,000

1 carat = 0.0002 kilograms

How to convert carats to kilograms

kg = ct ÷ 5,000

To convert carats to kilograms, divide the number of carats by 5,000.

Example: 18 ct to kg

  1. Start with the value in carats: 18 ct.
  2. Divide by 5,000: 18 ÷ 5,000 = 0.0036.
  3. Result: 18 carats = 0.0036 kilograms.

Going the other way, 1 kilogram = 5,000 carats, so to convert kilograms back to carats you multiply by the same number. See kilograms to carats.

Carats to kilograms conversion table

Carats (ct)Kilograms (kg)
0.25 ct 0.00005 kg
0.5 ct 0.0001 kg
0.75 ct 0.00015 kg
1 ct 0.0002 kg
1.5 ct 0.0003 kg
2 ct 0.0004 kg
2.5 ct 0.0005 kg
3 ct 0.0006 kg
4 ct 0.0008 kg
5 ct 0.001 kg
6 ct 0.0012 kg
7 ct 0.0014 kg
8 ct 0.0016 kg
9 ct 0.0018 kg
10 ct 0.002 kg
11 ct 0.0022 kg
12 ct 0.0024 kg
13 ct 0.0026 kg
14 ct 0.0028 kg
15 ct 0.003 kg
16 ct 0.0032 kg
17 ct 0.0034 kg
18 ct 0.0036 kg
19 ct 0.0038 kg
20 ct 0.004 kg
21 ct 0.0042 kg
22 ct 0.0044 kg
23 ct 0.0046 kg
24 ct 0.0048 kg
25 ct 0.005 kg
26 ct 0.0052 kg
27 ct 0.0054 kg
28 ct 0.0056 kg
29 ct 0.0058 kg
30 ct 0.006 kg
31 ct 0.0062 kg
32 ct 0.0064 kg
33 ct 0.0066 kg
34 ct 0.0068 kg
35 ct 0.007 kg

More ct to kg values

What is a carat?

The carat is the unit of mass for gemstones and pearls, equal to exactly 200 milligrams.

More about carats →

What is a kilogram?

The kilogram is the base unit of mass in the International System of Units (SI) and the unit used for body weight, food and goods in almost every country.

More about kilograms →

Convert carats to other units

Convert other units to kilograms

Frequently asked questions

How many kilograms are in a carat?

One carat is 0.0002 kilograms.

How many carats are in a kilogram?

One kilogram is 5,000 carats.

What is the formula to convert carats to kilograms?

kg = ct ÷ 5,000.