Convert Stones to Carats
Convert Stones (st) to Carats (ct) instantly and accurately.
Conversion Formula
ct = st × 31751.4659
About Stones
A stone (st) equals 14 pounds or approximately 6.350 kg. It is the standard unit for expressing human body weight in the United Kingdom and Ireland, where a person will say they weigh '11 stone 4' (meaning 11 stone and 4 pounds, or 158 lb / 71.7 kg). Despite the UK's official adoption of the metric system, stones remain the dominant unit for personal body weight on British bathroom scales, in doctors' offices, and in everyday conversation. British newspapers and sports reports routinely describe athletes' weights in stones and pounds.
About Carats
A metric carat (ct or CD) is exactly 200 milligrams (0.2 g), the universal standard for weighing gemstones. Established internationally in 1907, it replaced fractionally different regional carat weights previously used in different countries. The total weight of a diamond or colored gemstone is always expressed in carats: a 1.00 ct diamond of excellent cut and color can command over $5,000. The Cullinan diamond, the largest gem-quality rough diamond ever found, weighed 3,106.75 carats.
Quick Reference Table
| Stones (st) | Carats (ct) |
|---|---|
| 1 st | 31751.5 ct |
| 2 st | 63502.9 ct |
| 5 st | 158757 ct |
| 10 st | 317515 ct |
| 25 st | 793787 ct |
| 50 st | 1587570 ct |
| 100 st | 3175150 ct |