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Carats to Grams Converter

ct → g: type a value and the result appears instantly.

1 ct = 0.2 g
1 g = 5 ct
—

How to convert carats to grams

Use this formula:

g = ct × 0.2

Examples

ct to g conversion chart

carats (ct)grams (g)
0.1 ct0.02 g
0.25 ct0.05 g
0.5 ct0.1 g
1 ct0.2 g
2 ct0.4 g
3 ct0.6 g
4 ct0.8 g
5 ct1 g
6 ct1.2 g
7 ct1.4 g
8 ct1.6 g
9 ct1.8 g
10 ct2 g
12 ct2.4 g
15 ct3 g
20 ct4 g
25 ct5 g
30 ct6 g
40 ct8 g
50 ct10 g
60 ct12 g
70 ct14 g
75 ct15 g
80 ct16 g
90 ct18 g
100 ct20 g
150 ct30 g
200 ct40 g
250 ct50 g
500 ct100 g
1,000 ct200 g

About the units

Carat (ct) is a commonly used unit. 1 ct = 200 mg.

Gram (g) is a metric (SI) unit. 1 g = 0.001 kg.

Frequently asked questions

How do I convert carats to grams?
Multiply the value in ct by 0.2.
How many grams are in 1 carat?
1 ct = 0.2 g.
What is 12 ct in g?
12 ct = 2.4 g.
How do I convert grams to carats?
Use the reverse converter: g → ct.

Weight Converter →

Sources: NIST SP 811 · BIPM SI Brochure · NIST Handbook 44. Last reviewed: 2026-10 · FreeUnitConverters