Convert carats to milligrams
1 ct = 200 mg — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
200mg
1 ct = 200 mg
How to convert carats to milligrams
Multiply the number of carats by 200 to get milligrams.
The exact factor is 200 .
Carat: The metric carat: exactly 200 mg.
Carat to Milligram conversion table
| Carats (ct) | Milligrams (mg) |
|---|---|
| 1 ct | 200 |
| 2 ct | 400 |
| 3 ct | 600 |
| 5 ct | 1000 |
| 10 ct | 2000 |
| 20 ct | 4000 |
| 25 ct | 5000 |
| 50 ct | 10 000 |
| 100 ct | 20 000 |
| 250 ct | 50 000 |
| 500 ct | 100 000 |
| 1000 ct | 200 000 |
Milligram to Carat conversion table
| Milligrams (mg) | Carats (ct) |
|---|---|
| 1 mg | 0.005 |
| 2 mg | 0.01 |
| 3 mg | 0.015 |
| 5 mg | 0.025 |
| 10 mg | 0.05 |
| 20 mg | 0.1 |
| 25 mg | 0.125 |
| 50 mg | 0.25 |
| 100 mg | 0.5 |
| 250 mg | 1.25 |
| 500 mg | 2.5 |
| 1000 mg | 5 |
Frequently asked
How many milligrams are in a carat?
One carat equals 200 milligrams (ct → mg). That figure is exact, not rounded.
How do you convert carats to milligrams?
Multiply the number of carats by 200 to get milligrams.
What is 1 mg in carats?
One milligram is 0.005 carats.
What is 10 ct in mg?
10 ct = 2000 mg.
What exactly is a carat?
The metric carat: exactly 200 mg.