Grams to Carats Conversion (g to ct)

Grams to Carats Converter

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

Result in Carats:

1 g = 5 ct

How to Convert Grams to Carats

To convert a measurement in grams to a measurement in carats, multiply the weight by the following conversion ratio: 5 carats/gram.

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

carats = grams × 5

The weight in carats is equal to the weight in grams multiplied by 5.

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

carats = (5 g × 5) = 25 ct

conversion scale showing grams and equivalent carats weight values

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.

What Is a Gram?

A gram is a unit of mass equal to 1/1,000 of a kilogram or 0.035274 ounces, and is equivalent to the mass of one cubic centimeter, or one milliliter, 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.

Learn more about grams.

What Is a Carat?

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.

Learn more about carats.

Gram to Carat Conversion Table

Table showing various gram measurements converted to carats.
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

Table showing various gram measurements converted to carats.

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