Carat (ct)
The carat is a jewelry mass unit for diamonds, gemstones, and pearls.
History: the carat became a jewelry and gemstone unit and is now exactly 200 milligrams.
Quickly convert carats to milligrams without lookup tables or manual math.
This page is focused on converting carats to milligrams. Type a number into the first field and the result appears immediately in the second field.
Example: 1 ct = 200 mg. Conversion formula: result = value × 0.0002 / 1.0E-6.
Use this converter for everyday calculations, study notes, engineering checks, and quick value verification without installing a separate app.
The carat is a jewelry mass unit for diamonds, gemstones, and pearls.
History: the carat became a jewelry and gemstone unit and is now exactly 200 milligrams.
The milligram is used for medicine doses, chemistry, vitamins, and very small masses.
History: the milligram became a decimal fraction of the gram and found wide use in pharmacy and chemistry.
Enter a value in the Carat field. The converter applies the formula "result = value × 0.0002 / 1.0E-6" and immediately shows the result in milligrams.
1 ct = 200 mg.
Yes. Use the swap button or choose the reverse pair from the full conversion list.