Convert Carats to Milligrams

Enter the weight in carats below to get the value converted to milligrams.

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Results in Milligrams:
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1 ct = 200 mg

How to Convert Carats to Milligrams

Scales are used to measure weight

To convert a carat measurement to a milligram measurement, multiply the weight by the conversion ratio. One carat is equal to 200 milligrams, so use this simple formula to convert:

milligrams = carats × 200

The weight in milligrams is equal to the carats multiplied by 200.

For example, here's how to convert 5 carats to milligrams using the formula above.
5 ct = (5 × 200) = 1,000 mg

Carats and milligrams are both units used to measure weight. Keep reading to learn more about each unit of measure.

Carats

The carat is a unit of mass/weight equal to 200 milligrams.

A carat is sometimes also referred to as a metric carat. Carats can be abbreviated as ct, and are also sometimes abbreviated as CD. For example, 1 carat can be written as 1 ct or 1 CD.

Milligrams

The milligram is the mass equal to 1/1,000 of a gram, or 0.0154 grains.

The milligram, or milligramme, is an SI unit of weight in the metric system. In the metric system, "milli" is the prefix for 10-3. Milligrams can be abbreviated as mg, for example 1 milligram can be written as 1 mg.

Carat Measurements and Equivalent Milligram Conversions

Common carat values converted to the equivalent milligram value
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
11 ct 2,200 mg
12 ct 2,400 mg
13 ct 2,600 mg
14 ct 2,800 mg
15 ct 3,000 mg
16 ct 3,200 mg
17 ct 3,400 mg
18 ct 3,600 mg
19 ct 3,800 mg
20 ct 4,000 mg
21 ct 4,200 mg
22 ct 4,400 mg
23 ct 4,600 mg
24 ct 4,800 mg
25 ct 5,000 mg
26 ct 5,200 mg
27 ct 5,400 mg
28 ct 5,600 mg
29 ct 5,800 mg
30 ct 6,000 mg
31 ct 6,200 mg
32 ct 6,400 mg
33 ct 6,600 mg
34 ct 6,800 mg
35 ct 7,000 mg
36 ct 7,200 mg
37 ct 7,400 mg
38 ct 7,600 mg
39 ct 7,800 mg
40 ct 8,000 mg

More Carat Weight Conversions

US Customary & Imperial Units
Convert to Tons
1 ct is equal to 2.2046E-7 tons
Convert to Pounds
1 ct is equal to 0.000441 pounds
Convert to Ounces
1 ct is equal to 0.007055 ounces
SI Units
Convert to Metric Tons
1 ct is equal to 2.0E-7 metric tons
Convert to Kilograms
1 ct is equal to 0.0002 kilograms
Convert to Grams
1 ct is equal to 0.2 grams
Other Units
Convert to Long Tons
1 ct is equal to 1.9684E-7 long tons