Table Of Contents
Carat to grain Conversion
1 carat (CD) is equal to 3.086471671 grain (gr).
1 CD = 3.086471671 gr
or
1 gr = 0.32399455 CD
Formula
To convert a mass from carat (CD) to grain (gr), multiply the mass in carat by 3.086471671
m(gr) = m(CD) × 3.086471671
Examples:
Convert 50 carat to grain:
m(gr) = 50CD × 3.086471671 = 154.3235835 gr
Conversion table
| Carat (CD) | Grain (gr) |
|---|---|
| 1 CD | 3.086471671 gr |
| 2 CD | 6.172943341 gr |
| 3 CD | 9.259415012 gr |
| 5 CD | 15.432358353 gr |
| 10 CD | 30.864716706 gr |
| 20 CD | 61.729433412 gr |
| 25 CD | 77.161791765 gr |
| 50 CD | 154.323583529 gr |
| 100 CD | 308.647167059 gr |
| 250 CD | 771.617917647 gr |
| 500 CD | 1543.235835294 gr |
| 1000 CD | 3086.471670588 gr |
| Grain (gr) | Carat (CD) |
|---|---|
| 1 gr | 0.32399455 CD |
| 2 gr | 0.6479891 CD |
| 3 gr | 0.97198365 CD |
| 5 gr | 1.61997275 CD |
| 10 gr | 3.2399455 CD |
| 20 gr | 6.479891 CD |
| 25 gr | 8.09986375 CD |
| 50 gr | 16.1997275 CD |
| 100 gr | 32.399455 CD |
| 250 gr | 80.9986375 CD |
| 500 gr | 161.997275 CD |
| 1000 gr | 323.99455 CD |
Frequently asked questions
How do I convert carat to grain?
Multiply the value in carat by 3.086471671 to get the result in grain. For example, 5 CD × 3.086471671 = 15.432358353 gr.
How many grain are in 1 carat?
1 carat (CD) is equal to 3.086471671 grain (gr).
How do I convert grain back to carat?
Use the inverse operation: divide the value in grain by 3.086471671 to get the result in carat.
How accurate is the carat to grain conversion?
The converter multiplies by the conversion factor 3.086471671 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)