Micrograms to Carats Converter

To convert a measurement in micrograms to carats, multiply the value by 0.000005. The conversion factor comes from the relationship between both units and the kilogram.

For example, to convert 5 µg to carats: 5 × 0.000005 = 0.000025 ct.

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 carat is a unit of mass for gemstones equal to exactly 200 milligrams (0.2 grams). The carat takes its name from the carob seed, once used as a counterweight for weighing gems. The metric carat of exactly 200 mg was adopted internationally in the early 20th century to standardize the gem trade.

Common uses of carats include: Diamond and gemstone weight; Jewelry pricing and grading; Pearl and precious stone trading; Gemological certification.

Here are some common values converted:

1 µg = 0.000005 ct 5 µg = 0.000025 ct 10 µg = 0.00005 ct 50 µg = 0.00025 ct 100 µg = 0.0005 ct