Convert Carats to Milligrams
1 carat = 200 milligrams. Type any value below to convert in either direction — the calculation happens in your browser.
Carats to Milligrams formula
Multiply the number of carats by 200 to get milligrams.
milligrams = carats × 200To go the other way: divide the number of milligrams by 200, or multiply by 0.005.
carats = milligrams ÷ 200Carats to Milligrams conversion table
| Carats | Milligrams |
|---|---|
| 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 |
| 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 |
| 75 ct | 15,000 mg |
| 100 ct | 20,000 mg |
| 250 ct | 50,000 mg |
| 500 ct | 100,000 mg |
| 1,000 ct | 200,000 mg |
Milligrams to Carats conversion table
| Milligrams | Carats |
|---|---|
| 1 mg | 0.005 ct |
| 2 mg | 0.01 ct |
| 3 mg | 0.015 ct |
| 4 mg | 0.02 ct |
| 5 mg | 0.025 ct |
| 6 mg | 0.03 ct |
| 7 mg | 0.035 ct |
| 8 mg | 0.04 ct |
| 9 mg | 0.045 ct |
| 10 mg | 0.05 ct |
About the carat
A metric carat is exactly 200 milligrams and is the mass unit for gemstones and pearls.
About the milligram
A milligram is one thousandth of a gram, the standard unit for medication doses and nutrient content.
Frequently asked questions
How many milligrams are in a carat?
There are 200 milligrams in one carat.
How many carats are in a milligram?
There are 0.005 carats in one milligram.
Is this conversion exact?
The ratio between the carat and the milligram is fixed by definition, so the conversion is exact — the figures shown here are rounded for readability only.
What is 10 carats in milligrams?
10 carats equals 2,000 milligrams.