››Convert kilometre to zettametre

 kilometers zettameter

How many kilometers in 1 zettameter? The answer is 1.0E+18.
We assume you are converting between kilometre and zettametre.
You can view more details on each measurement unit:
kilometers or zettameter
The SI base unit for length is the metre.
1 metre is equal to 0.001 kilometers, or 1.0E-21 zettameter.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between kilometres and zettameters.
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››Definition: Kilometer

A kilometre (American spelling: kilometer, symbol: km) is a unit of length equal to 1000 metres (from the Greek words khilia = thousand and metro = count/measure). It is approximately equal to 0.621 miles, 1094 yards or 3281 feet.

››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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