Milligrams (mg) to Kilograms (kg) Conversion
Milligrams
The milligram is a unit of mass equal to one thousandth of a gram (10⁻⁶ kg) and is the standard unit of dosage in pharmacology and clinical medicine. Drug doses, vitamin quantities, and mineral recommended daily allowances are routinely expressed in milligrams, where precision is critical: in many medications the therapeutic margin is narrow, making accurate measurement a matter of patient safety.
Kilograms
The kilogram is the SI base unit of mass. From 1889 to 2019, it was defined by the International Prototype of the Kilogram — a physical cylinder of platinum-iridium alloy stored near Paris. In 2019, the kilogram was redefined in terms of Planck's constant (h = 6.62607015 × 10⁻³⁴ J·s), making it the first base unit defined entirely by a fundamental constant of nature. This eliminated the risk of the kilogram gradually changing mass due to contamination of the physical prototype.
| Milligrams (mg) | Kilograms (kg) |
|---|---|
| 0.1 mg | 0.0000001 kg |
| 1 mg | 0.000001 kg |
| 2 mg | 0.000002 kg |
| 3 mg | 0.000003 kg |
| 5 mg | 0.000005 kg |
| 10 mg | 0.00001 kg |
| 20 mg | 0.00002 kg |
| 30 mg | 0.00003 kg |
| 50 mg | 0.00005 kg |
| 100 mg | 0.0001 kg |
| 1000 mg | 0.001 kg |
Frequently Asked Questions (FAQ)
How many kilograms are in 1 milligrams?
1 milligrams (mg) is exactly 0.000001 kilograms (kg).
How do I convert milligrams to kilograms?
Multiply the value in milligrams by 0.000001 to get the result in kilograms. Or use the converter above — type any number and see the result instantly.