Convert Milligram to Kilogram
Use this free converter to change milligrams (mg) into kilograms (kg). Milligram and kilogram both measure weight & mass. As a quick reference, 1 mg equals 0.000001 kg, and 1 kg equals 1000000 mg.
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Kilogram (kg)
0.000001
1 mg = 0.000001 kg
Weight & Mass conversion table
| Milligram | Kilogram |
|---|---|
| 0.01 | 1.0000e-8 |
| 0.1 | 1.0000e-7 |
| 0.5 | 5.0000e-7 |
| 1 | 0.000001 |
| 2 | 0.000002 |
| 3 | 0.000003 |
| 5 | 0.000005 |
| 10 | 0.00001 |
| 20 | 0.00002 |
| 25 | 0.000025 |
| 50 | 0.00005 |
| 100 | 0.0001 |
| 1,000 | 0.001 |
How to convert Milligram to Kilogram
Multiply the milligram value by 0.000001 to get kilograms.
- Enter the number of milligrams you want to convert.
- The converter instantly shows the equivalent value in kilograms.
- Worked example: 15 mg × 0.000001 = 0.000015 kg.
- Use the swap button to reverse the conversion (kilogram to milligram).
About these units
Milligram (mg)
- Definition
- A milligram (mg) is one thousandth of a gram, used for very small masses such as medication doses.
- History
- It is a standard metric subdivision using the prefix "milli-" (one thousandth).
- Current use
- Milligrams express drug dosages, vitamin content, and quantities in chemistry and pharmacology.
Kilogram (kg)
- Definition
- The kilogram (kg) is the SI base unit of mass, defined since 2019 by fixing the value of the Planck constant.
- History
- It was originally the mass of one liter of water, then a platinum-iridium cylinder kept near Paris until the 2019 redefinition.
- Current use
- The kilogram is the global standard for weighing goods, people, and ingredients in science and commerce.
Frequently asked questions
How many kilograms are in a milligram?
There are 0.000001 kg in 1 mg. To convert, multiply the number of milligrams by 0.000001.
How do I convert milligrams to kilograms?
Multiply the milligram value by 0.000001 to get kilograms. For example, 10 mg = 0.00001 kg.
Is this milligram-to-kilogram converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Milligram to other weight & mass units
| Unit | 1 Milligram equals |
|---|---|
| Kilogram (kg) | 0.000001 kg |
| Gram (g) | 0.001 g |
| Microgram (µg) | 1000 µg |
| Metric Ton (t) | 1.0000e-9 t |
| Pound (lb) | 0.0000022046226 lb |
| Ounce (oz) | 0.000035273962 oz |
| Stone (st) | 1.5747e-7 st |
| US Ton (ton) | 1.1023e-9 ton |
| Imperial Ton (long ton) | 9.8421e-10 long ton |
| Carat (ct) | 0.005 ct |