Grams to Carats Converter
Convert grams (g) to carats (ct), with the formula, a conversion table and exact factors.
Change the values and press Calculate to work out your own figures.
Enter a weight, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 g = 5 ct
- 1 × 5 = 5 ct
How to convert grams to carats
1 g = 5 ct, so multiply by 5 to go from grams to carats. Going the other way, 1 ct = 0.2 g.
ct = g × 5 g = ct × 0.2
Worked example:
1 g = 5 ct 5 × 5 = 25 ct
Grams to carats table
| Grams | Carats |
|---|---|
| 1 g | 5 ct |
| 2 g | 10 ct |
| 3 g | 15 ct |
| 4 g | 20 ct |
| 5 g | 25 ct |
| 6 g | 30 ct |
| 7 g | 35 ct |
| 8 g | 40 ct |
| 9 g | 45 ct |
| 10 g | 50 ct |
| 15 g | 75 ct |
| 20 g | 100 ct |
| 25 g | 125 ct |
| 30 g | 150 ct |
| 40 g | 200 ct |
| 50 g | 250 ct |
| 75 g | 375 ct |
| 100 g | 500 ct |
| 250 g | 1,250 ct |
| 500 g | 2,500 ct |
| 1000 g | 5,000 ct |
About the units
- Grams (g)
- Grams, a metric unit. Definition: BIPM SI Brochure.
- Carats (ct)
- Carats, a specialised unit. Metric carat, 200 mg exactly. Definition: NIST Handbook 44 (2024), Appendix C: General Tables of Units of Measurement.