Carats to Milligrams
Convert carats (ct) to milligrams (mg). Type in either box; the other updates as you go.
1 carat equals200 mg
1 milligram equals0.005 ct
Formulamg = ct × 200
How to convert carats to milligrams
To convert carats to milligrams, multiply the number of carats by 200.
mg = ct × 200
Example
Convert 5 carats to milligrams:
5 ct × 200 = 1,000 mg
Carat to milligram conversion chart
| Carats (ct) | Milligrams (mg) |
|---|---|
| 1 ct | 200 mg |
| 2 ct | 400 mg |
| 3 ct | 600 mg |
| 4 ct | 800 mg |
| 5 ct | 1,000 mg |
| 6 ct | 1,200 mg |
| 7 ct | 1,400 mg |
| 8 ct | 1,600 mg |
| 9 ct | 1,800 mg |
| 10 ct | 2,000 mg |
| 12 ct | 2,400 mg |
| 15 ct | 3,000 mg |
| 20 ct | 4,000 mg |
| 25 ct | 5,000 mg |
| 30 ct | 6,000 mg |
| 40 ct | 8,000 mg |
| 50 ct | 10,000 mg |
| 60 ct | 12,000 mg |
| 70 ct | 14,000 mg |
| 75 ct | 15,000 mg |
| 80 ct | 16,000 mg |
| 90 ct | 18,000 mg |
| 100 ct | 20,000 mg |
| 150 ct | 30,000 mg |
| 200 ct | 40,000 mg |
| 250 ct | 50,000 mg |
| 500 ct | 100,000 mg |
| 1,000 ct | 200,000 mg |
Going the other way? See the milligrams to carats chart.
About the units
Carat (ct)
A metric carat is exactly 200 milligrams. It measures the weight of gemstones and pearls.
Milligram (mg)
A milligram is one thousandth of a gram. Medicine doses and nutrition labels use milligrams.
Frequently asked questions
How many milligrams are in a carat?
There are 200 milligrams in a carat.
How many carats are in a milligram?
There are 0.005 carats in a milligram.
How do you convert carats to milligrams?
To convert carats to milligrams, multiply the number of carats by 200.
What is 5 carats in milligrams?
5 carats equals 1,000 milligrams.
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