Convert carats to mg
Carats to milligrams. Enter a value to convert, or use the carats to mg chart further down the page.
1 carat equals 200 milligrams. Going the other way, 1 milligram = 0.005 carats.
How to convert carats to mg
To convert carats to milligrams, multiply the carat value by 200. You can also divide by 0.005 to get the same answer.
mg = ct × 200
Worked example
Convert 15 ct to milligrams:
15 ct = 3,000 mg
carats to mg conversion chart
Use this carats to mg table for quick reference without typing anything.
| carats (ct) | milligrams (mg) |
|---|---|
| 0.01 ct | 2 mg |
| 0.1 ct | 20 mg |
| 1 ct | 200 mg |
| 2 ct | 400 mg |
| 3 ct | 600 mg |
| 5 ct | 1,000 mg |
| 10 ct | 2,000 mg |
| 20 ct | 4,000 mg |
| 50 ct | 10,000 mg |
| 100 ct | 20,000 mg |
| 1,000 ct | 200,000 mg |
What is a carat?
The metric carat is exactly 200 milligrams and is used to weigh gemstones.
What is a milligram?
The milligram is one thousandth of a gram and is the standard unit for stating medicine dosages and micronutrient content.
Frequently asked questions
How many mg are in a carat?
1 carats equals 200 mg. Going the other way, 1 mg is 0.005 carats.
How do you convert carats to mg?
To convert carats to milligrams, multiply the carat value by 200. You can also divide by 0.005 to get the same answer.
What is 10 carats in mg?
10 carats equals 2,000 mg. The conversion chart on this page lists the other values people look up most often.
Related weight conversions
Convert carats to other units
Convert other units to mg
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