How Big is 1 Zepto? Definition and Examples

How big is 1 zepto? 1 zepto is a prefix that is equal to 10 to the power of negative twenty-one .

1 zepto = 10-21

It is a 1 preceded by 20 zeros, a decimal point, and another zero.

1 zepto = 0.000000000000000000001

Below are a few examples of the word zepto being used as a prefix for meter and second.

1 zeptometer = 0.000000000000000000001 m

1 zeptosecond = 0.000000000000000000001 s

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