Convert carats to grams
1 ct = 0.2 g — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.2g
As a fraction: 1/5
1 ct = 0.2 g
How to convert carats to grams
Multiply the number of carats by 0.2 to get grams.
The exact factor is 0.2 — as a fraction, 1/5.
Carat: The metric carat: exactly 200 mg.
Carat to Gram conversion table
| Carats (ct) | Grams (g) |
|---|---|
| 1 ct | 0.2 |
| 2 ct | 0.4 |
| 3 ct | 0.6 |
| 5 ct | 1 |
| 10 ct | 2 |
| 20 ct | 4 |
| 25 ct | 5 |
| 50 ct | 10 |
| 100 ct | 20 |
| 250 ct | 50 |
| 500 ct | 100 |
| 1000 ct | 200 |
Gram to Carat conversion table
| Grams (g) | Carats (ct) |
|---|---|
| 1 g | 5 |
| 2 g | 10 |
| 3 g | 15 |
| 5 g | 25 |
| 10 g | 50 |
| 20 g | 100 |
| 25 g | 125 |
| 50 g | 250 |
| 100 g | 500 |
| 250 g | 1250 |
| 500 g | 2500 |
| 1000 g | 5000 |
Frequently asked
How many grams are in a carat?
One carat equals 0.2 grams (ct → g). That figure is exact, not rounded.
How do you convert carats to grams?
Multiply the number of carats by 0.2 to get grams.
What is 1 g in carats?
One gram is 5 carats.
What is 10 ct in g?
10 ct = 2 g.
What exactly is a carat?
The metric carat: exactly 200 mg.