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Convert carat to gram

Here you can quickly calculate how many gram fit in one carat.

- scroll: formula · table · questions -

  • 1 ct = 0.2 g
  • 1 g = 5 ct

Carat to gram conversion table

carat gram
1 0.2
2 0.4
5 1
10 2
20 4
50 10
100 20

Carat to gram formula

To convert carat to gram, multiply by 0.2.

1 ct = 0.2 g
Example: 1 carat = 0.2 gram

Common mass conversion mistakes

  • The carat used for gemstones is a unit of mass: exactly 0.2 g, so a 5-carat diamond weighs 1 gram. The karat used for gold is something else entirely, a purity scale where 24k is pure gold and 18k is 75% gold. The two cannot be converted into each other.

Quick carat and gram conversion quiz

Score: 0

130 carat equals 22.1 gram.

Correct answer: 130 carat = 26 gram.

15.5 gram equals 85.3 carat.

Correct answer: 15.5 gram = 77.5 carat.

114 carat equals 22.8 gram.

Correct answer: 114 carat = 22.8 gram.

84 gram equals 420 carat.

Correct answer: 84 gram = 420 carat.

15.7 carat equals 2.83 gram.

Correct answer: 15.7 carat = 3.14 gram.

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