Convert Microgram to Milligram

One µg equals 0.001 mg. This converter allows you to easily convert between Microgram and Milligram in real time.

Formula

µg × 0.001 = mg

Example: 1 µg = 0.001 mg

What is Microgram?

The microgram is one-millionth of a gram, or one-thousandth of a milligram. Its symbol µg uses the Greek letter mu, denoting the SI prefix "micro." It is commonly used to express recommended daily intakes of vitamins such as vitamin D and vitamin B12. In clinical medicine, hormone levels and certain blood markers are reported in micrograms. Environmental regulations also use micrograms per liter or per cubic meter to set limits on pollutant concentrations in water and air.

What is Milligram?

The milligram is one-thousandth of a gram and is essential for measuring very small masses. It is most commonly seen in pharmaceutical dosages, where active ingredients are specified in milligrams per tablet or capsule. Nutritional information on food packaging also lists vitamins and minerals in milligrams. In analytical chemistry and environmental science, milligrams are used to quantify trace substances in samples.