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Convert grain (troy) to carat

Here you can quickly calculate how many carat fit in one grain (troy).

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  • 1 gr t = 0.323995 ct
  • 1 ct = 3.086472 gr t

Grain (troy) to carat conversion table

grain (troy) carat
1 0.323995
2 0.647989
5 1.619973
10 3.239945
20 6.479891
50 16.199727
100 32.399455

Formula to convert grain (troy) to carat

To convert grain (troy) to carat, multiply by 0.323995.

1 gr t = 0.323995 ct
Example: 1 grain (troy) = 0.323995 carat

Common mistakes in mass conversion

  • 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 grain (troy) to/from carat conversion quiz

Score: 0

229 grain (troy) equals 74.2 carat.

Correct answer: 229 grain (troy) = 74.2 carat.

13.3 grain (troy) equals 4.96 carat.

Correct answer: 13.3 grain (troy) = 4.31 carat.

10 grain (troy) equals 3.24 carat.

Correct answer: 10 grain (troy) = 3.24 carat.

4.3 carat equals 15.3 grain (troy).

Correct answer: 4.3 carat = 13.3 grain (troy).

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