About the Units
kilogram (kg)
The SI base unit of mass, defined as the mass of the International Prototype Kilogram.
zettagram (Zg)
A unit of mass equal to 10^21 grams or 10^18 kilograms.
Common Conversions
- 1 kg = 9.999999e-19 Zg
- 1000000050000000000.0 kg = 1 Zg