## ››Convert zeptometre to millimicron

 zeptometer millimicron

How many zeptometer in 1 millimicron? The answer is 1000000000000.
We assume you are converting between zeptometre and millimicron.
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zeptometer or millimicron
The SI base unit for length is the metre.
1 metre is equal to 1.0E+21 zeptometer, or 1000000000 millimicron.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between zeptometers and millimicrons.
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## ››Definition: Zeptometre

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

So 1 zeptometre = 10-21 metre.

## ››Definition: Millimicron

The SI prefix "milli" represents a factor of 10-3, or in exponential notation, 1E-3.

So 1 millimicron = 10-3 microns.

The definition of a micron is as follows:

a metric unit of length equal to one millionth of a meter

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