# Kilograms to Milligrams Converter

Enter the weight in kilograms below to get the value converted to milligrams.

## Result in Milligrams:

1 kg = 1,000,000 mg
1,000 g

Do you want to convert milligrams to kilograms?

## How to Convert Kilograms to Milligrams

To convert a measurement in kilograms to a measurement in milligrams, multiply the weight by the following conversion ratio: 1,000,000 milligrams/kilogram.

Since one kilogram is equal to 1,000,000 milligrams, you can use this simple formula to convert:

milligrams = kilograms × 1,000,000

The weight in milligrams is equal to the weight in kilograms multiplied by 1,000,000.

For example, here's how to convert 5 kilograms to milligrams using the formula above.
milligrams = (5 kg × 1,000,000) = 5,000,000 mg

### How Many Milligrams Are in a Kilogram?

There are 1,000,000 milligrams in a kilogram, which is why we use this value in the formula above.

1 kg = 1,000,000 mg

Kilograms and milligrams are both units used to measure weight. Keep reading to learn more about each unit of measure.

## What Is a Kilogram?

One kilogram is equal to 1,000 grams, 2.204623 pounds, or 1/1,000 of a metric ton.

The formal definition of the kilogram changed in 2019. One kilogram was previously equal to the mass of the platinum-iridium bar, known as the International Prototype of the Kilogram, which was stored in SÃ¨vres, France.

The 2019 SI brochure now defines the kilogram using the Planck constant, and it is defined using the meter and second.[1] It is equal to the mass of 1,000 cubic centimeters, or milliliters, of water.

The kilogram, or kilogramme, is the SI base unit for weight and is also a multiple of the gram. In the metric system, "kilo" is the prefix for thousands, or 103. Kilograms can be abbreviated as kg; for example, 1 kilogram can be written as 1 kg.

Learn more about kilograms.

## What Is a Milligram?

The milligram is a unit of mass equal to 1/1,000 of a gram, or 0.0154 grains.

The milligram, or milligramme, is an SI unit of weight in the metric system. In the metric system, "milli" is the prefix for thousandths, or 10-3. Milligrams can be abbreviated as mg; for example, 1 milligram can be written as 1 mg.

Learn more about milligrams.

## Kilogram to Milligram Conversion Table

Table showing various kilogram measurements converted to milligrams.
Kilograms Milligrams
0.000001 kg 1 mg
0.000002 kg 2 mg
0.000003 kg 3 mg
0.000004 kg 4 mg
0.000005 kg 5 mg
0.000006 kg 6 mg
0.000007 kg 7 mg
0.000008 kg 8 mg
0.000009 kg 9 mg
0.0000001 kg 0.1 mg
0.000001 kg 1 mg
0.00001 kg 10 mg
0.0001 kg 100 mg
0.001 kg 1,000 mg
0.01 kg 10,000 mg
0.1 kg 100,000 mg
1 kg 1,000,000 mg

## References

1. International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf