Grams to Carats Conversion
Enter the weight in grams below to get the value converted to carats.
How to Convert Grams to Carats
To convert a gram measurement to a carat measurement, multiply the weight by the conversion ratio.
Since one gram is equal to 5 carats, you can use this simple formula to convert:
The weight in carats is equal to the grams multiplied by 5.

How Many Carats Are in a Gram?
There are 5 carats in a gram, which is why we use this value in the formula above.
1 g = 5 ct
Grams and carats are both units used to measure weight. Keep reading to learn more about each unit of measure.
Grams
A gram is the mass/weight equal to 1/1,000 of a kilogram and is roughly equivalent to the mass of one cubic centimeter of water.
The gram, or gramme, is an SI unit of weight in the metric system. Grams can be abbreviated as g; for example, 1 gram can be written as 1 g.
Carats
The carat is a unit of mass/weight equal to 200 milligrams.[1]
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.
Gram to Carat Conversion Table
Grams | Carats |
---|---|
1 g | 5 ct |
2 g | 10 ct |
3 g | 15 ct |
4 g | 20 ct |
5 g | 25 ct |
6 g | 30 ct |
7 g | 35 ct |
8 g | 40 ct |
9 g | 45 ct |
10 g | 50 ct |
11 g | 55 ct |
12 g | 60 ct |
13 g | 65 ct |
14 g | 70 ct |
15 g | 75 ct |
16 g | 80 ct |
17 g | 85 ct |
18 g | 90 ct |
19 g | 95 ct |
20 g | 100 ct |
21 g | 105 ct |
22 g | 110 ct |
23 g | 115 ct |
24 g | 120 ct |
25 g | 125 ct |
26 g | 130 ct |
27 g | 135 ct |
28 g | 140 ct |
29 g | 145 ct |
30 g | 150 ct |
31 g | 155 ct |
32 g | 160 ct |
33 g | 165 ct |
34 g | 170 ct |
35 g | 175 ct |
36 g | 180 ct |
37 g | 185 ct |
38 g | 190 ct |
39 g | 195 ct |
40 g | 200 ct |
References
- National Institute of Standards and Technology, Precious Metals Conversion Information, https://www.nist.gov/pml/owm/laws-and-regulations/precious-metals-conversion