2 kg are equal to 2,000,000 milligrams. You can find this result by performing two conversions, passing through the metric primary unit of the mass, the gram:
1 kg is equal to 1000 g; hence 2 kg = 2000 g.
1 g is equal to 1000 mg: 2000 g = 2000000 mg.
You will never measure a milligram in your daily life, but the drugs you take contain active ingredients measured in that unit. Read more