Grams to Micrograms Converter

To convert a measurement in grams to micrograms, multiply the value by 1,000,000. The conversion factor comes from the relationship between both units and the kilogram.

For example, to convert 5 g to micrograms: 5 × 1,000,000 = 5,000,000 µg.

A gram is a metric unit of mass equal to one thousandth of a kilogram (0.001 kg) or about 0.035 ounces. Defined in 1795 as the mass of one cubic centimeter of water at the temperature of melting ice. The gram is the base for many everyday metric masses and the reference point for nutritional labeling worldwide.

Common uses of grams include: Cooking and recipe ingredient quantities; Nutrition labels and food portions; Postage and small parcel weight; Jewelry and precious metal weighing.

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.

Here are some common values converted:

1 g = 1,000,000 µg 5 g = 5,000,000 µg 10 g = 10,000,000 µg 50 g = 50,000,000 µg 100 g = 100,000,000 µg