Milligrams to kilograms

kilograms = milligrams × 0.000001

How to convert milligrams to kilograms

One milligram is 0.000001 kilograms, so multiply the number of milligrams by 0.000001. For example, 20 milligrams is 20 × 0.000001 = 0.00002 kilograms. To go back, divide by the same number, or multiply by 1,000,000.

Quick estimate

Multiplying by about 0.000001 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	kilograms
1 mg	0.000001 kg
2 mg	0.000002 kg
3 mg	0.000003 kg
4 mg	0.000004 kg
5 mg	0.000005 kg
6 mg	0.000006 kg
7 mg	0.000007 kg
8 mg	0.000008 kg
9 mg	0.000009 kg
10 mg	0.00001 kg
11 mg	0.000011 kg
12 mg	0.000012 kg
13 mg	0.000013 kg
14 mg	0.000014 kg
15 mg	0.000015 kg
16 mg	0.000016 kg
17 mg	0.000017 kg
18 mg	0.000018 kg
19 mg	0.000019 kg
20 mg	0.00002 kg
25 mg	0.000025 kg
30 mg	0.00003 kg
40 mg	0.00004 kg
50 mg	0.00005 kg
60 mg	0.00006 kg
70 mg	0.00007 kg
75 mg	0.000075 kg
80 mg	0.00008 kg
90 mg	0.00009 kg
100 mg	0.0001 kg
120 mg	0.00012 kg
150 mg	0.00015 kg
200 mg	0.0002 kg
250 mg	0.00025 kg
300 mg	0.0003 kg
400 mg	0.0004 kg
500 mg	0.0005 kg
750 mg	0.00075 kg
1,000 mg	0.001 kg
1,500 mg	0.0015 kg
2,000 mg	0.002 kg
5,000 mg	0.005 kg
10,000 mg	0.01 kg

Questions

How many kilograms are in a milligram?

0.000001 kilograms.

How do I convert milligrams to kilograms in a spreadsheet?

Put the value in A1 and type =A1*0.000001, 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.