Milligrams to Kilograms Converter
1 milligram = 0.000001 kilograms
1 milligram equals 0.000001 kilograms
How to convert milligrams to kilograms
These units measure mass. Pounds and ounces mean avoirdupois unless the unit explicitly says troy; a fluid ounce measures volume and requires a density to relate it to mass.
kg = mg × 0.000001One milligram is 0.000001 kilograms, so a single multiplication converts any value.
0.00001 kg = 10 × 0.000001Milligrams to kilograms conversion table
Common values in milligrams, converted to kilograms.
| Milligrams (mg) | Kilograms (kg) |
|---|---|
| 1 | 0.000001 |
| 2 | 0.000002 |
| 3 | 0.000003 |
| 4 | 0.000004 |
| 5 | 0.000005 |
| 10 | 0.00001 |
| 20 | 0.00002 |
| 25 | 0.000025 |
| 50 | 0.00005 |
| 100 | 0.0001 |
| 250 | 0.00025 |
| 500 | 0.0005 |
| 1,000 | 0.001 |
About these units
milligrammg
One thousandth of a gram, the standard unit for medication doses.
kilogramkg
The SI base unit of mass, defined by fixing the Planck constant.
Reference: BIPM SI Brochure (9th ed.).
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.