# ››Convert millimetre to zettametre

mm
zettametre

 Did you mean to convert megametre millimetre to zettametre

How many mm in 1 zettametre? The answer is 1.0E+24.
We assume you are converting between millimetre and zettametre.
You can view more details on each measurement unit:
mm or zettametre
The SI base unit for length is the metre.
1 metre is equal to 1000 mm, or 1.0E-21 zettametre.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between millimetres and zettameters.
Type in your own numbers in the form to convert the units!

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# ››Definition: Millimeter

A millimetre (American spelling: millimeter, symbol mm) is one thousandth of a metre, which is the International System of Units (SI) base unit of length. The millimetre is part of a metric system. A corresponding unit of area is the square millimetre and a corresponding unit of volume is the cubic millimetre.

# ››Definition: Zettametre

The SI prefix "zetta" represents a factor of 1021, or in exponential notation, 1E21.

So 1 zettametre = 1021 metre.

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