About the Units
zeptogram (zg)
A unit of mass equal to 10^-21 grams or 10^-24 kilograms.
kilogram (kg)
The SI base unit of mass, defined as the mass of the International Prototype Kilogram.
Common Conversions
- 1 zg = 9.999999e-25 kg
- 1.0000001e24 zg = 1 kg