Convert Carats to milligrams
1 carat = 200 milligrams · mg = ct × 200
When you need this conversion
This conversion goes from carats, the gemstone weight unit fixed at 0.2 grams, to milligrams, the unit used for medication doses and nutrition labels. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
Carats to milligrams conversion table
| Carats (ct) | Milligrams (mg) |
|---|---|
| 1 ct | 200 mg |
| 2 ct | 400 mg |
| 3 ct | 600 mg |
| 5 ct | 1,000 mg |
| 10 ct | 2,000 mg |
| 15 ct | 3,000 mg |
| 20 ct | 4,000 mg |
| 25 ct | 5,000 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 |
The formula
mg = ct × 200Because both units measure weight, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Milligrams to carats →Related weight conversions
- Carats to grams
- Grams to ounces
- Grams to carats
- Kilograms to pounds
- Kilograms to stones
- Metric tons to US tons
- Ounces to grams
- Pounds to kilograms
- Stones to kilograms
- US tons to metric tons
- Grams to milligrams
- Kilograms to milligrams
Frequently asked questions
- How many milligrams are in a carat?
- There are 200 milligrams in 1 carat. The formula is mg = ct × 200.
- How do you convert carats to milligrams?
- Use the formula mg = ct × 200. For example, 10 carats equals 2,000 milligrams.
- Is the carats to milligrams conversion exact?
- Yes. Carats and milligrams are both units of weight, related by an exact defined factor. Displayed results are rounded for readability.
- What is ct short for?
- ct is the standard symbol for carat. mg is the symbol for milligram.