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Kilograms to Milligrams Converter

Convert kilograms (kg) to milligrams (mg), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter a weight, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
The unit you want the answer in. Swap exchanges the two units.
Result
1,000,000 mg
short tons (US tons)
0.00110231131092 ton
long tons (imperial tons)
0.000984206527611 long ton
metric tons (tonnes)
0.001 t
stones
0.157473044418 st
pounds
2.20462262185 lb
ounces (avoirdupois)
35.2739619496 oz
grams
1,000 g
micrograms
1,000,000,000 µg
carats
5,000 ct
atomic mass units (daltons)
6.02214075367 × 10²⁶ u

1 kg = 1,000,000 mg

Show the working
  1. 1 kg = 1000000 mg
  2. 1 × 1000000 = 1000000 mg

How to convert kilograms to milligrams

1 kg = 1,000,000 mg, so multiply by 1,000,000 to go from kilograms to milligrams. Going the other way, 1 mg = 1 × 10⁻⁶ kg.

mg = kg × 1,000,000
kg = mg × 1

Worked example:

1 kg = 1000000 mg
5 × 1000000 = 5000000 mg

Kilograms to milligrams table

KilogramsMilligrams
1 kg1,000,000 mg
2 kg2,000,000 mg
3 kg3,000,000 mg
4 kg4,000,000 mg
5 kg5,000,000 mg
6 kg6,000,000 mg
7 kg7,000,000 mg
8 kg8,000,000 mg
9 kg9,000,000 mg
10 kg10,000,000 mg
15 kg15,000,000 mg
20 kg20,000,000 mg
25 kg25,000,000 mg
30 kg30,000,000 mg
40 kg40,000,000 mg
50 kg50,000,000 mg
75 kg75,000,000 mg
100 kg100,000,000 mg
250 kg250,000,000 mg
500 kg500,000,000 mg
1000 kg1,000,000,000 mg

About the units

Kilograms (kg)
Kilograms, a metric unit. Definition: BIPM SI Brochure.
Milligrams (mg)
Milligrams, a metric unit. Definition: BIPM SI Brochure.

Formula version 0.1.0Reviewed