Convert Carats to Grams

Enter the value in carats to get its exact equivalent in grams instantly.

How to convert carats to grams?

To convert a measurement in carats (ct) to grams (g), we multiply the value by the conversion factor 0.2.

g = ct × 0.2

The carat unit of weight (exactly 0.2 grams) is used to weigh gemstones such as diamonds, and should not be confused with the 'karat' used to measure gold purity, which is a scale from 0 to 24 rather than a unit of weight.

Carats (ct) Grams (g)
1.00 0.2000
5.00 1.00
10.00 2.00
50.00 10.00
100.00 20.00

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Frequently Asked Questions

How many grams are in 1 carat?

1 ct equals exactly 0.2 grams.

Is a diamond's carat the same as gold's karat?

No, they're different concepts despite the similar name. A diamond's carat is a unit of weight (0.2 g). Gold's karat (as in '18-karat gold') measures its purity on a scale of 0 to 24.