About the Units
kilogram (kg)
The SI base unit of mass, defined as the mass of the International Prototype Kilogram.
femtogram (fg)
A unit of mass equal to 10^-15 grams or 10^-18 kilograms.
Common Conversions
- 1 kg = 1000000000000000000.0 fg
- 1e-18 kg = 1 fg