Convert Milligrams to Kilograms
1 milligram is 0.000001 kg. One milligram is exactly 0.000001 kilograms.
One milligram is 1.0000 × 10^-6 kilograms. To convert milligrams to kilograms, multiply by 1.0000 × 10^-6; to go the other way, divide by 1.0000 × 10^-6 or multiply by 1000000. The factor is exact rather than rounded: it follows from NIST Handbook 44. One thousandth of a gram, and exactly 1,000 micrograms.
Factor checked against the defining standard · How we check
Kilograms
0.000001 kg
- Milligrams × 1.0000 × 10^-6
value * 0.0000010 kg
1 milligram in every weight unit
| Unit | Value | Exact factor |
|---|---|---|
| ounces | 0.00003527396195 oz | × 0.0000352739619496 |
| pounds | 0.000002204622622 lb | × 0.00000220462262185 |
| stone | 0.0000001574730444 st | × 0.000000157473044418 |
| US tons | 0.000000001102311311 ton | × 0.00000000110231131092 |
| micrograms | 1,000 mcg | × 1,000 |
| milligrams (as entered) | 1 mg | — |
| grams | 0.001 g | × 0.001 |
| kilograms | 0.000001 kg | × 0.000001 |
| tonnes | 0.000000001 t | × 0.000000001 |
Factors are entered by hand from NIST Handbook 44 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert milligrams to kilograms?
- 1.Take the measurement in milligrams.
- 2.Multiply by 1.0000 × 10^-6 — that is how many kilograms fit in one milligram.
- 3.To go back the other way, divide by 1.0000 × 10^-6, or multiply by 1000000.
Milligrams to kilograms conversion table
| 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 |
| 12 mg | 0.000012 kg |
| 15 mg | 0.000015 kg |
| 20 mg | 0.00002 kg |
| 25 mg | 0.000025 kg |
| 50 mg | 0.00005 kg |
| 100 mg | 0.0001 kg |
What are milligrams and kilograms?
- Milligram (mg)
- One thousandth of a gram, and exactly 1,000 micrograms. The unit almost every medicine is dosed in.
- Kilogram (kg)
- The SI base unit of mass, defined since 2019 by fixing the Planck constant rather than by a metal cylinder in Paris.
Questions people actually ask
- How many kilograms are in a milligram?
- 1.0000 × 10^-6. The SI base unit of mass, defined since 2019 by fixing the Planck constant rather than by a metal cylinder in Paris.
- How do I convert kilograms back to milligrams?
- Divide by 1.0000 × 10^-6, or multiply by 1000000 — they are the same operation.
Other weight conversions
Kilograms to milligrams — the same conversion the other way.