Convert Carats to stones
1 carat = 0.000031495 stones · st = ct ÷ 31,751.4659
When you need this conversion
This conversion goes from carats, the gemstone weight unit fixed at 0.2 grams, to stones, used in the UK and Ireland for body weight. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
Carats to stones conversion table
| Carats (ct) | Stones (st) |
|---|---|
| 1 ct | 0.000031495 st |
| 2 ct | 0.000062989 st |
| 3 ct | 0.000094484 st |
| 5 ct | 0.000157473 st |
| 10 ct | 0.000314946 st |
| 15 ct | 0.000472419 st |
| 20 ct | 0.000629892 st |
| 25 ct | 0.000787365 st |
| 50 ct | 0.00157473 st |
| 75 ct | 0.002362096 st |
| 100 ct | 0.003149461 st |
| 250 ct | 0.007873652 st |
| 500 ct | 0.015747 st |
| 1,000 ct | 0.031495 st |
The formula
st = ct ÷ 31,751.4659Because both units measure weight, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Stones to carats →Related weight conversions
- Kilograms to stones
- Carats to grams
- Grams to ounces
- Grams to carats
- Kilograms to pounds
- Metric tons to US tons
- Ounces to grams
- Pounds to kilograms
- Stones to kilograms
- US tons to metric tons
- Milligrams to stones
- Grams to stones
Frequently asked questions
- How many stones are in a carat?
- There are 0.000031495 stones in 1 carat. The formula is st = ct ÷ 31,751.4659.
- How do you convert carats to stones?
- Use the formula st = ct ÷ 31,751.4659. For example, 10 carats equals 0.000314946 stones.
- Is the carats to stones conversion exact?
- Yes. Carats and stones are both units of weight, related by an exact defined factor. Displayed results are rounded for readability.
- What is ct short for?
- ct is the standard symbol for carat. st is the symbol for stone.