Table Of Contents
Carat to stones Conversion
1 carat (CD) is equal to 0.00003149460888 stones (stone).
1 CD = 0.00003149460888 stone
or
1 stone = 31751.4659 CD
Formula
To convert a mass from carat (CD) to stones (stone), divide the mass in carat by 31751.4659
m(stone) = m(CD) / 31751.4659
Examples:
Convert 250 carat to stones:
m(stone) = 250CD / 31751.4659 = 0.007873652221 stone
Conversion table
| Carat (CD) | Stones (stone) |
|---|---|
| 1 CD | 3.149461e-5 stone |
| 2 CD | 6.298922e-5 stone |
| 3 CD | 9.448383e-5 stone |
| 5 CD | 1.57473e-4 stone |
| 10 CD | 3.14946e-4 stone |
| 20 CD | 6.29892e-4 stone |
| 25 CD | 7.87365e-4 stone |
| 50 CD | 0.00157473 stone |
| 100 CD | 0.003149461 stone |
| 250 CD | 0.007873652 stone |
| 500 CD | 0.015747304 stone |
| 1000 CD | 0.031494609 stone |
| Stones (stone) | Carat (CD) |
|---|---|
| 1 stone | 31751.4659 CD |
| 2 stone | 63502.9318 CD |
| 3 stone | 95254.3977 CD |
| 5 stone | 158757.3295 CD |
| 10 stone | 317514.659 CD |
| 20 stone | 635029.318 CD |
| 25 stone | 793786.6475 CD |
| 50 stone | 1587573.295 CD |
| 100 stone | 3175146.59 CD |
| 250 stone | 7937866.475 CD |
| 500 stone | 1.587573295e7 CD |
| 1000 stone | 3.17514659e7 CD |
Frequently asked questions
How do I convert carat to stones?
Divide the value in carat by 31751.4659 to get the result in stones. For example, 5 CD ÷ 31751.4659 = 1.57473e-4 stone.
How many stones are in 1 carat?
1 carat (CD) is equal to 3.149461e-5 stones (stone).
How do I convert stones back to carat?
Use the inverse operation: multiply the value in stones by 31751.4659 to get the result in carat.
How accurate is the carat to stones conversion?
The converter multiplies by the conversion factor 31751.4659 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- ISO 80000-4:2019 — Quantities and units — Part 4: Mechanics
- NIST Handbook 44, Appendix C — General Tables of Units of Measurement (current edition)
- NIST Guide to the SI (SP 811), Appendix B.9: Factors for units listed by kind of quantity or field of science
- Circular of the Bureau of Standards No. 43: The Metric Carat (1st edition, issued November 1, 1913)
