Carat to Milligram Converter.
Exactly 200 milligrams, the standard unit for gemstone and diamond weight. Converting to milligrams: One thousandth of a gram, common on nutrition labels and in medicine. One carat equals 200 mg.
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Conversion formula
Multiply the carat value by 200 to get milligrams. (factor: 200)
1 ct = 200 mg
Quick reference table
| ct | mg |
|---|---|
| 1 ct | 200 mg |
| 2 ct | 400 mg |
| 5 ct | 1,000 mg |
| 10 ct | 2,000 mg |
| 25 ct | 5,000 mg |
| 50 ct | 10,000 mg |
| 100 ct | 20,000 mg |
| 250 ct | 50,000 mg |
Need the reverse? Try ourMilligram to Carat.
Carat to Milligram FAQ
How many milligrams are in one carat?
One carat equals 200 mg. Multiply by 200 to convert any value.
How do you convert ct to mg?
Multiply the carat value by 200 to get milligrams.
When would you use carats vs milligrams?
Exactly 200 milligrams, the standard unit for gemstone and diamond weight. One thousandth of a gram, common on nutrition labels and in medicine.