Micrograms to Kilograms Converter

To convert a measurement in micrograms to kilograms, multiply the value by 0.000000001. The conversion factor comes from the relationship between both units and the kilogram.

For example, to convert 5 µg to kilograms: 5 × 0.000000001 = 0.000000005 kg.

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 kilogram is the SI base unit of mass, equal to 1,000 grams or approximately 2.205 pounds. Originally defined in 1795 as the mass of one liter of water, the kilogram was fixed by a platinum-iridium cylinder from 1889 until 2019, when it was redefined in terms of the Planck constant. It is the only SI base unit whose name carries a prefix.

Common uses of kilograms include: Body weight in most countries; Grocery and produce pricing (price per kg); Shipping and freight weight; Scientific and laboratory mass measurements.

Here are some common values converted:

1 µg = 0.000000001 kg 5 µg = 0.000000005 kg 10 µg = 0.00000001 kg 50 µg = 0.00000005 kg 100 µg = 0.0000001 kg