Grain (gr)
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.
Quickly convert grains to carats without lookup tables or manual math.
This page is focused on converting grains to carats. Type a number into the first field and the result appears immediately in the second field.
Example: 1 gr = 0.32399455 ct. Conversion formula: result = value × 6.479891E-5 / 0.0002.
Use this converter for everyday calculations, study notes, engineering checks, and quick value verification without installing a separate app.
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.
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.
Enter a value in the Grain field. The converter applies the formula "result = value × 6.479891E-5 / 0.0002" and immediately shows the result in carats.
1 gr = 0.32399455 ct.
Yes. Use the swap button or choose the reverse pair from the full conversion list.