›› Measurement unit: zeptogram

Full name: zeptogram

Plural form: zeptograms

Symbol: zg

Category type: weight

Scale factor: 1.0E-24

›› SI unit: kilogram

The SI base unit for mass is the kilogram. The SI derived unit for weight or force is the newton.
1 kilogram is equal to 1.0E+24 zeptogram.

Valid units must be of the weight type.
You can use this form to select from known units:

Convert zeptogram to

The SI prefix "zepto" represents a factor of 10^-21, or in exponential notation, 1E-21.

So 1 zeptogram = 10^-21 grams-force.