Convert carat to stone

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

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Conversion from carat to stone example

Starting value Increment Accuracy

To convert carat to stone, multiply by 0.000031.

1 ct = 0.000031 st

Example: 1 carat = 0.000031 stone

A stone is often assumed to be 10 pounds, but it is 14 pounds, about 6.35 kg. A body weight of '12 stone' is therefore about 76 kg, not 54 kg. Multiply stone by 6.35 to get kilograms.
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.

Score: 0

25 stone equals 7.94e+5 carat.

Correct answer: 25 stone = 7.94e+5 carat.

2 stone equals 6.35e+4 carat.

Correct answer: 2 stone = 6.35e+4 carat.

5 stone equals 3.18e+4 carat.

Correct answer: 5 stone = 1.59e+5 carat.

1 stone equals 3.18e+4 carat.

Correct answer: 1 stone = 3.18e+4 carat.