Carats to Milligrams Converter
Convert carats (ct) to milligrams (mg) instantly. Weight units matter at the wet market, where older stalls and Chinese medical halls still quote prices per kati or tael, and when following American recipes in ounces and pounds.
Result
- Milligrams
- 200 mg
How to use the carats to milligrams converter
- Enter the carats (ct).
- The results update as you type, or press Calculate.
- Read the milligrams first, then the supporting figures below it.
Formula
Milligrams = carats × 200
Worked example
For example, with these inputs:
- Carats (ct): 1
the calculator returns:
- Milligrams: 200 mg
Carats to Milligrams table
| Carats | Milligrams |
|---|---|
| 1 ct | 200 mg |
| 2 ct | 400 mg |
| 5 ct | 1,000 mg |
| 10 ct | 2,000 mg |
| 20 ct | 4,000 mg |
| 25 ct | 5,000 mg |
| 50 ct | 10,000 mg |
| 100 ct | 20,000 mg |
| 250 ct | 50,000 mg |
| 500 ct | 100,000 mg |
| 1,000 ct | 200,000 mg |
About this conversion
Weight units matter at the wet market, where older stalls and Chinese medical halls still quote prices per kati or tael, and when following American recipes in ounces and pounds.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Frequently asked questions
How many milligrams are in one carat?
1 ct = 200 mg.
How do I convert ct to mg?
Milligrams = carats × 200.