Convert Stone to Carat
Use this free converter to change stones (st) into carats (ct). Stone and carat both measure weight & mass. As a quick reference, 1 st equals 31751.466 ct, and 1 ct equals 0.000031494609 st.
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Carat (ct)
31751.466
1 st = 31751.466 ct
Weight & Mass conversion table
| Stone | Carat |
|---|---|
| 0.01 | 317.51466 |
| 0.1 | 3175.1466 |
| 0.5 | 15875.733 |
| 1 | 31751.466 |
| 2 | 63502.932 |
| 3 | 95254.398 |
| 5 | 158757.33 |
| 10 | 317514.66 |
| 20 | 635029.32 |
| 25 | 793786.65 |
| 50 | 1587573.3 |
| 100 | 3175146.6 |
| 1,000 | 31751466 |
How to convert Stone to Carat
Multiply the stone value by 31751.466 to get carats.
- Enter the number of stones you want to convert.
- The converter instantly shows the equivalent value in carats.
- Worked example: 15 st × 31751.466 = 476271.99 ct.
- Use the swap button to reverse the conversion (carat to stone).
About these units
Stone (st)
- Definition
- A stone (st) is a British imperial unit of mass equal to 14 pounds, or about 6.35 kilograms.
- History
- Historically the stone varied by commodity before being fixed at 14 pounds in 1835.
- Current use
- Stones are still widely used in the UK and Ireland to express body weight.
Carat (ct)
- Definition
- A carat (ct) is a unit of mass for gemstones equal to exactly 200 milligrams.
- History
- It takes its name from the carob seed, once used as a counterweight, and was standardised at 0.2 g in 1907.
- Current use
- Carats express the weight of diamonds and other precious stones in the jewellery trade.
Frequently asked questions
How many carats are in a stone?
There are 31751.466 ct in 1 st. To convert, multiply the number of stones by 31751.466.
How do I convert stones to carats?
Multiply the stone value by 31751.466 to get carats. For example, 10 st = 317514.66 ct.
Is this stone-to-carat converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Stone to other weight & mass units
| Unit | 1 Stone equals |
|---|---|
| Kilogram (kg) | 6.3502932 kg |
| Gram (g) | 6350.2932 g |
| Milligram (mg) | 6350293.2 mg |
| Microgram (µg) | 6350293200 µg |
| Metric Ton (t) | 0.0063502932 t |
| Pound (lb) | 14 lb |
| Ounce (oz) | 224 oz |
| US Ton (ton) | 0.007 ton |
| Imperial Ton (long ton) | 0.00625 long ton |
| Carat (ct) | 31751.466 ct |