About the Units
zettagram (Zg)
A unit of mass equal to 10^21 grams or 10^18 kilograms.
carat (ct)
A unit of mass equal to 200 milligrams, used for measuring gemstones and pearls.
Common Conversions
- 1 Zg = 5.0000005e21 ct
- 1.9999998e-22 Zg = 1 ct