Convert milligrams to carats
1 mg = 0.005 ct — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.005ct
As a fraction: 1/200
1 mg = 0.005 ct
How to convert milligrams to carats
Multiply the number of milligrams by 0.005 to get carats.
The exact factor is 0.005 — as a fraction, 1/200.
Carat: The metric carat: exactly 200 mg.
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 |
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 |
Frequently asked
How many carats are in a milligram?
One milligram equals 0.005 carats (mg → ct). That figure is exact, not rounded.
How do you convert milligrams to carats?
Multiply the number of milligrams by 0.005 to get carats.
What is 1 ct in milligrams?
One carat is 200 milligrams.
What is 10 mg in ct?
10 mg = 0.05 ct.
What exactly is a carat?
The metric carat: exactly 200 mg.