Milligrams to carats

carats = milligrams × 0.005

How to convert milligrams to carats

One milligram is 0.005 carats, so multiply the number of milligrams by 0.005. For example, 20 milligrams is 20 × 0.005 = 0.1 carats. To go back, divide by the same number, or multiply by 200.

Quick estimate

Multiplying by about 0.005 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.

milligrams	carats
1 mg	0.005 ct
2 mg	0.01 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
25 mg	0.125 ct
30 mg	0.15 ct
40 mg	0.2 ct
50 mg	0.25 ct
60 mg	0.3 ct
70 mg	0.35 ct
75 mg	0.375 ct
80 mg	0.4 ct
90 mg	0.45 ct
100 mg	0.5 ct
120 mg	0.6 ct
150 mg	0.75 ct
200 mg	1 ct
250 mg	1.25 ct
300 mg	1.5 ct
400 mg	2 ct
500 mg	2.5 ct
750 mg	3.75 ct
1,000 mg	5 ct
1,500 mg	7.5 ct
2,000 mg	10 ct
5,000 mg	25 ct
10,000 mg	50 ct

Questions

How many carats are in a milligram?

0.005 carats.

How do I convert milligrams to carats in a spreadsheet?

Put the value in A1 and type =A1*0.005, 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.