Milligrams to Carats Converter

Convert milligrams to carats instantly.

Common weight units

Milligram (mg)

Definition: A milligram (symbol: mg) is one thousandth of a gram and one millionth of a kilogram. It is a metric unit used for extremely small masses.

History/origin: The milligram comes directly from the metric system's decimal structure, making it a natural small subdivision of the gram for science, medicine, and laboratory work.

Current use: Milligrams are used for medicine dosages, vitamins, chemical compounds, and very small quantities of ingredients where grams would be too coarse.

Carat (ct)

Definition: The carat is a gemstone mass unit. One ct is exactly 200 mg, which is the same as 0.2 g.

History/origin: Gem traders once used carob seeds as small weight references; modern standards replaced that practice with the fixed 200 mg metric carat.

Current use: Ct is used for diamonds, sapphires, rubies, emeralds, pearls, appraisal reports, jewelry listings, auction catalogs, and gem certification documents.

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