Convert Stones to Carats
Convert Stones to Carats instantly. 1 Stone (st) equals 31,751.47 Carats (ct).
Stones to Carats conversion table
| Stones (st) | Carats (ct) |
|---|---|
| 1 st | 31,751.47 ct |
| 2 st | 63,502.93 ct |
| 3 st | 95,254.4 ct |
| 5 st | 158,757.33 ct |
| 10 st | 317,514.66 ct |
| 20 st | 635,029.32 ct |
| 50 st | 1,587,573.3 ct |
| 100 st | 3,175,146.59 ct |
| 500 st | 15,875,732.95 ct |
| 1,000 st | 31,751,465.9 ct |
1 Stone = 31,751.47 Carats · multiply Stones by 31,751.47
About converting Stones to Carats
Stones (st) and Carats (ct) are both units of weight & mass, so converting between them is a single multiplication: multiply your Stones figure by 31,751.47. Ten Stones comes to 317,514.66 Carats, and a hundred works out at 3,175,146.59 Carats.
Rule of thumb: going from Stones to Carats multiplies, so the figure always grows — one Stone is already 31,751.47 Carats. If your answer came out smaller, you have the conversion the wrong way round.
What is a Stone?
The stone is fourteen pounds and, outside Britain and Ireland, essentially extinct. There it is still how people state body weight: a Briton says "eleven stone four", meaning eleven stone plus four pounds, and the plural stays stone in that construction — never "eleven stones". Americans give the identical weight as a single number in pounds, which is why British figures baffle them. The unit predates standardisation and was once a moving target, with a stone of wool, cheese or glass all weighing different amounts, and it is no longer permitted for trade in the UK at all.
What is a Carat?
The metric carat is 0.2 grams exactly, standardised early in the twentieth century to replace a tangle of local carats that differed from one gem market to the next. Its name is traditionally traced to the carob seed, once used as a counterweight for small valuables. The trap is the near-identical karat, which is not a mass at all — it measures gold purity in twenty-fourths, so 18-karat gold is eighteen parts gold to six of other metal. Jewellers also split the carat into 100 points, which is why a "fifty-point" diamond is simply half a carat.
To put both in perspective: most adults weigh somewhere between 9 and 14 stone, while a typical engagement-ring diamond weighs about one carat.
The converter above updates as you type, and the table lists common values for quick reference. Need the opposite direction? Use the Carats to Stones converter, or browse all Weight & Mass converters.
Frequently asked questions
How many Carats are in one Stone?
There are 31,751.47 Carats in one Stone.
How do I convert Stones to Carats?
Multiply the number of Stones by 31,751.47. For example, 10 Stones = 317,514.66 Carats.
What is 100 Stones in Carats?
100 Stones is equal to 3,175,146.59 Carats.
How do I convert Carats to Stones?
Multiply the Carats value by 0.00003149 (or divide by 31,751.47).
Is this Stones to Carats conversion exact?
The definition is exact — Stones and Carats are both fixed against the same base by international agreement — but the decimal shown here is rounded for readability, because the true ratio does not terminate. For engineering or scientific work, carry more decimal places than this page displays.
What is a Stone?
The stone is fourteen pounds and, outside Britain and Ireland, essentially extinct. There it is still how people state body weight: a Briton says "eleven stone four", meaning eleven stone plus four pounds, and the plural stays stone in that construction — never "eleven stones". Americans give the identical weight as a single number in pounds, which is why British figures baffle them. The unit predates standardisation and was once a moving target, with a stone of wool, cheese or glass all weighing different amounts, and it is no longer permitted for trade in the UK at all.
What is a Carat?
The metric carat is 0.2 grams exactly, standardised early in the twentieth century to replace a tangle of local carats that differed from one gem market to the next. Its name is traditionally traced to the carob seed, once used as a counterweight for small valuables. The trap is the near-identical karat, which is not a mass at all — it measures gold purity in twenty-fourths, so 18-karat gold is eighteen parts gold to six of other metal. Jewellers also split the carat into 100 points, which is why a "fifty-point" diamond is simply half a carat.