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Convert carat to grain

Here you can quickly calculate how many grain fit in one carat.
write a number and we convert instantly
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- scroll: formula · table · questions -

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

Example: carat to grain

  • 1 carat = 3.086472 grain

Carat to grain conversion table

carat grain
1 3.086472
2 6.172943
5 15.432358
10 30.864717
20 61.729433
50 154.323584
100 308.647167

Carat to grain formula

To convert carat to grain, multiply by 3.086472.

1 ct = 3.086472 gr
Example: 1 carat = 3.086472 grain

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 grain conversion quiz

Score: 0

136 carat equals 420 grain.

Correct answer: 136 carat = 420 grain.

18 grain equals 5.83 carat.

Correct answer: 18 grain = 5.83 carat.

20 carat equals 61.7 grain.

Correct answer: 20 carat = 61.7 grain.

More mass conversions