The carat (ct) is a unit of mass used for measuring gemstones and pearls. The metric carat (adopted in year 1907) is equal to 0.2 grams (g) = 200 milligrams (mg) = 0.007055 ounces (oz) = 3.08647167 grains or or "troy grains" (gr).
Calculator-Converter.com Copyright © 2008 www.calculator-converter.com