Micrograms to Milligrams Converter

To convert a measurement in micrograms to milligrams, multiply the value by 0.001. The conversion factor comes from the relationship between both units and the kilogram.

For example, to convert 5 µg to milligrams: 5 × 0.001 = 0.005 mg.

A microgram is a metric unit of mass equal to one millionth of a gram (0.000001 g) or one billionth of a kilogram. The microgram (sometimes abbreviated 'mcg' in medicine to avoid confusion with 'mg') became important with the discovery of vitamins and hormones that are active in tiny quantities. The prefix 'micro' comes from the Greek for 'small'.

Common uses of micrograms include: Vitamin and trace-mineral dosages (e.g. vitamin D, B12); Hormone and potent drug amounts; Environmental contaminant concentrations; Analytical chemistry and toxicology.

A milligram is a metric unit of mass equal to one thousandth of a gram (0.001 g) or one millionth of a kilogram. Part of the original metric system, the milligram derives from the Latin 'mille' (thousand). It became indispensable in pharmacy and medicine, where drug doses are almost always expressed in milligrams.

Common uses of milligrams include: Medication and supplement dosages; Nutrient amounts on nutrition labels (sodium, vitamins); Laboratory chemistry and analytical work; Gunpowder and reloading measurements.

Here are some common values converted:

1 µg = 0.001 mg 5 µg = 0.005 mg 10 µg = 0.01 mg 50 µg = 0.05 mg 100 µg = 0.1 mg