Sumwise

Carats to milligrams

milligrams = carats × 200

Reverse: milligrams to carats

How to convert carats to milligrams

One carat is 200 milligrams, so multiply the number of carats by 200. For example, 20 carats is 20 × 200 = 4,000 milligrams. To go back, divide by the same number, or multiply by 0.005.

Quick estimate

Multiplying by about 200 gets within 0.0% of the exact answer, which is enough to check that a result makes sense.

Where it comes up

Mass conversions come up in cooking and baking, shipping and luggage limits, body weight, medicine doses and buying food by weight.

caratsmilligrams
1 ct200 mg
2 ct400 mg
3 ct600 mg
4 ct800 mg
5 ct1,000 mg
6 ct1,200 mg
7 ct1,400 mg
8 ct1,600 mg
9 ct1,800 mg
10 ct2,000 mg
11 ct2,200 mg
12 ct2,400 mg
13 ct2,600 mg
14 ct2,800 mg
15 ct3,000 mg
16 ct3,200 mg
17 ct3,400 mg
18 ct3,600 mg
19 ct3,800 mg
20 ct4,000 mg
25 ct5,000 mg
30 ct6,000 mg
40 ct8,000 mg
50 ct10,000 mg
60 ct12,000 mg
70 ct14,000 mg
75 ct15,000 mg
80 ct16,000 mg
90 ct18,000 mg
100 ct20,000 mg
120 ct24,000 mg
150 ct30,000 mg
200 ct40,000 mg
250 ct50,000 mg
300 ct60,000 mg
400 ct80,000 mg
500 ct100,000 mg
750 ct150,000 mg
1,000 ct200,000 mg
1,500 ct300,000 mg
2,000 ct400,000 mg
5,000 ct1,000,000 mg
10,000 ct2,000,000 mg

Questions

How many milligrams are in a carat?

200 milligrams.

How do I convert carats to milligrams in a spreadsheet?

Put the value in A1 and type =A1*200, then fill the formula down the column.

Are the values in the table exact?

They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.