Carats to stone converter
Stone (st)
1 carat = 0.00003149460888 stone
How to convert carats to stone
st = ct × 0.0000314946088836
Multiply the number of carats by 0.0000314946088836 to get stone. Going the other way, divide by 0.0000314946088836 (or multiply by 31751.4659).
One carat is exactly defined as 0.0000314946088836 stone (to 12 significant figures), and one stone is 31751.4659 carats.
Worked examples
- Convert 5 carats: 5 × 0.0000314946088836 = 0.0001574730444 0.0001574730444 stone.
- Convert 12.5 carats: 12.5 × 0.0000314946088836 = 0.000393682611 0.000393682611 stone.
- Convert 250 carats: 250 × 0.0000314946088836 = 0.007873652221 0.007873652221 stone.
Quick-reference table
| ct | st |
|---|---|
| 1 | 0.00003149460888 |
| 2 | 0.00006298921777 |
| 3 | 0.00009448382665 |
| 5 | 0.0001574730444 |
| 10 | 0.0003149460888 |
| 15 | 0.0004724191333 |
| 20 | 0.0006298921777 |
| 25 | 0.0007873652221 |
| 50 | 0.001574730444 |
| 75 | 0.002362095666 |
| 100 | 0.003149460888 |
| 1,000 | 0.03149460888 |
| st | ct |
|---|---|
| 1 | 31,751.4659 |
| 2 | 63,502.9318 |
| 3 | 95,254.3977 |
| 5 | 158,757.3295 |
| 10 | 317,514.659 |
| 15 | 476,271.9885 |
| 20 | 635,029.318 |
| 25 | 793,786.6475 |
| 50 | 1,587,573.295 |
| 75 | 2,381,359.942 |
| 100 | 3,175,146.59 |
| 1,000 | 31,751,465.9 |
Related conversions
Frequently asked questions
How many stone are in 1 carat?
1 carat equals 0.00003149460888 stone.
What is the formula to convert carats to stone?
Use st = ct × 0.0000314946088836. Multiply the number of carats by 0.0000314946088836 to get stone. Going the other way, divide by 0.0000314946088836 (or multiply by 31751.4659).
What is 100 carats in stone?
100 carats is 0.003149460888 stone.