Carats to Grains


Tell us what you think of the new site..


Abbreviated "ct." and spelled with a "c" is a measure of weight used for gemstones. One carat is equal to 1/5 of a gram (200 milligrams). Stones are measured to the nearest hundredth of a carat. A hundreth of a carat is also called a point. Thus a .10 carat stone can be called either 10 points, or 1/10 of a carat. Small stones like .05, and .10ct are most often referred to by point designations. Note that karat with a "K" is a measure of the purity of a gold alloy. A one carat round diamond of average proportions is approximately 6.5mm in diameter. Note that this relationship of weight and size is different for each family of stones. For example ruby and sapphire are both heavier than diamond (technically, they have a higher specific gravity, so a 1 carat ruby or sapphire is smaller in size than a on carat diamond. See Weights and Measures of Gold, Silver and Precious Gems for more information.

gr =
ct * 3.0865


1/7000 pound; equals a troy grain or 64.799 milligrams

Mobile phone converter app

Metric Conversion Table

Online Calculator

Quilates a Granos :: Carats en Gains :: Karat in Gran :: Quilates em Grãos :: Carati a Grani :: Karaats naar Granen :: Караты в Граны :: 克拉 到 格令 :: 克拉 到 格令 :: カラット から グレーン :: 캐럿에서 그레인으로 :: Karat till Grains :: Karat til Grains (korn) :: Karat til Gran :: Karát do Zrno :: Quirats a Grans :: Καράτια για Grains (Κόκκοι) :: Karaty do Grany :: Karati v Zrno :: karát do zrno :: Karát to Grain :: Карати в Зърна :: Quilates em Grãos :: Karaatit = Graanit :: Карати у Зрна :: Karatai įGranai :: कैरेट से अनाज को :: Karati u Zrna :: караты ў Грань :: Karatë në Grein :: Карати в Грани :: Quilate în Cereale :: karaat to Tera