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 grains without lookup tables or manual math.
This page is focused on converting carats to grains. Type a number into the first field and the result appears immediately in the second field.
Example: 1 ct = 3.0864716706 gr. Conversion formula: result = value × 0.0002 / 6.479891E-5.
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 grain is used in ballistics, historical pharmacy, and some jewelry measurements.
History: the grain comes from the mass of a barley or wheat grain and survives in ballistics and old apothecary measures.
Enter a value in the Carat field. The converter applies the formula "result = value × 0.0002 / 6.479891E-5" and immediately shows the result in grains.
1 ct = 3.0864716706 gr.
Yes. Use the swap button or choose the reverse pair from the full conversion list.