Zepto
Updated: 12/10/2023 by Computer Hope
Prefix used with the metric system that stands for 0.000000000000000000001. A zepto- (z) is sextillionth or 10 to the -21st power.
What is smaller than a zepto?
With SI prefixes, yocto is smaller than zepto.
What is larger than a zepto?
With SI prefixes, atto is larger than zepto.
What is yocto's non-decimal equivalent?
A zetta (Z) is the prefix used for 1021.
Measurements, SI, Z