How many zeptogram in 1 femtogram? The answer is 1000000. We assume you are converting between zeptogram and femtogram. You can view more details on each measurement unit: zeptogram or femtogram The SI base unit for mass is the kilogram. 1 kilogram is equal to 1.0E+24 zeptogram, or 1.0E+18 femtogram. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between zeptograms and femtograms. Type in your own numbers in the form to convert the units!
You can do the reverse unit conversion from femtogram to zeptogram, or enter any two units below:
The SI prefix "zepto" represents a factor of 10-21, or in exponential notation, 1E-21.
So 1 zeptogram = 10-21 grams-force.
The SI prefix "femto" represents a factor of 10-15, or in exponential notation, 1E-15.
So 1 femtogram = 10-15 grams-force.
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