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Convert carat (troy) to grain

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

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  • 1 ct t = 3.163633 gr
  • 1 gr = 0.316092 ct t

Carat (troy) to grain conversion table

carat (troy) grain
1 3.163633
2 6.327267
5 15.818167
10 31.636335
20 63.272669
50 158.181673
100 316.363346

Formula to convert carat (troy) to grain

To convert carat (troy) to grain, multiply by 3.163633.

1 ct t = 3.163633 gr
Example: 1 carat (troy) = 3.163633 grain

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 carat (troy) to/from grain conversion quiz

Score: 0

18 carat (troy) equals 56.9 grain.

Correct answer: 18 carat (troy) = 56.9 grain.

12.4 carat (troy) equals 39.2 grain.

Correct answer: 12.4 carat (troy) = 39.2 grain.

1.5 carat (troy) equals 4.75 grain.

Correct answer: 1.5 carat (troy) = 4.75 grain.

209 carat (troy) equals 661 grain.

Correct answer: 209 carat (troy) = 661 grain.

242 grain equals 88 carat (troy).

Correct answer: 242 grain = 76.5 carat (troy).

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