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.
Type in your own numbers in the form to convert the units!

››Want other units?

You can do the reverse unit conversion from
zettameter to kilometers, or enter any two units below:

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
10^{21}, or in exponential notation, 1E21.

So 1 zettametre = 10^{21} metre.

››Metric conversions and more

ConvertUnits.com provides an online
conversion calculator for all types of measurement units.
You can find metric conversion tables for SI units, as well
as English units, currency, and other data. Type in unit
symbols, abbreviations, or full names for units of length,
area, mass, pressure, and other types. Examples include mm,
inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm,
metres squared, grams, moles, feet per second, and many more!