About the Units
carat (ct)
A unit of mass equal to 200 milligrams, used for measuring gemstones and pearls.
petagram (Pg)
A unit of mass equal to 10^15 grams or 10^12 kilograms.
Common Conversions
- 1 ct = 1.9999999e-16 Pg
- 5000000000000000.0 ct = 1 Pg