Carats to Milligrams Converter

To convert a measurement in carats to milligrams, multiply the value by 200. The conversion factor comes from the relationship between both units and the kilogram.

For example, to convert 5 ct to milligrams: 5 × 200 = 1,000 mg.

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.

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 ct = 200 mg 5 ct = 1,000 mg 10 ct = 2,000 mg 50 ct = 10,000 mg 100 ct = 20,000 mg