About the Units
carat (ct)
A unit of mass equal to 200 milligrams, used for measuring gemstones and pearls.
pennyweight (dwt)
A unit of mass equal to 1/20 of a troy ounce or approximately 1.55 grams.
Common Conversions
- 1 ct = 0.12860297 dwt
- 7.7758703 ct = 1 dwt