Milligrams to Carats Converter

1 milligram (mg) equals 0.005 carats (ct).

Quick answer

  • 1 milligram = 0.005 carats
  • 1 carat = 200 milligrams
  • Formula: ct = mg ÷ 200

1 milligram = 0.005 carats

How to convert milligrams to carats

ct = mg ÷ 200

To convert milligrams to carats, divide the number of milligrams by 200.

Example: 18 mg to ct

  1. Start with the value in milligrams: 18 mg.
  2. Divide by 200: 18 ÷ 200 = 0.09.
  3. Result: 18 milligrams = 0.09 carats.

Going the other way, 1 carat = 200 milligrams, so to convert carats back to milligrams you multiply by the same number. See carats to milligrams.

Milligrams to carats conversion table

Milligrams (mg)Carats (ct)
0.25 mg 0.00125 ct
0.5 mg 0.0025 ct
0.75 mg 0.00375 ct
1 mg 0.005 ct
1.5 mg 0.0075 ct
2 mg 0.01 ct
2.5 mg 0.0125 ct
3 mg 0.015 ct
4 mg 0.02 ct
5 mg 0.025 ct
6 mg 0.03 ct
7 mg 0.035 ct
8 mg 0.04 ct
9 mg 0.045 ct
10 mg 0.05 ct
11 mg 0.055 ct
12 mg 0.06 ct
13 mg 0.065 ct
14 mg 0.07 ct
15 mg 0.075 ct
16 mg 0.08 ct
17 mg 0.085 ct
18 mg 0.09 ct
19 mg 0.095 ct
20 mg 0.1 ct
21 mg 0.105 ct
22 mg 0.11 ct
23 mg 0.115 ct
24 mg 0.12 ct
25 mg 0.125 ct
26 mg 0.13 ct
27 mg 0.135 ct
28 mg 0.14 ct
29 mg 0.145 ct
30 mg 0.15 ct
31 mg 0.155 ct
32 mg 0.16 ct
33 mg 0.165 ct
34 mg 0.17 ct
35 mg 0.175 ct

More mg to ct values

What is a milligram?

The milligram is a metric unit of mass equal to one thousandth of a gram.

More about milligrams →

What is a carat?

The carat is the unit of mass for gemstones and pearls, equal to exactly 200 milligrams.

More about carats →

Convert milligrams to other units

Convert other units to carats

Frequently asked questions

How many carats are in a milligram?

One milligram is 0.005 carats.

How many milligrams are in a carat?

One carat is 200 milligrams.

What is the formula to convert milligrams to carats?

ct = mg ÷ 200.