## ››Convert light year to zettametre

 light-year zettameter

How many light-year in 1 zettameter? The answer is 105700.08340246.
We assume you are converting between light year and zettametre.
You can view more details on each measurement unit:
light-year or zettameter
The SI base unit for length is the metre.
1 metre is equal to 1.0570008340246E-16 light-year, 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 light years and zettameters.
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## ››Definition: Light-year

A light year, abbreviated ly, is the distance light travels in one year: roughly 9.46 × 1012 kilometres (9.46 petametres, or about 5.88 × 1012 (nearly six trillion) miles). More specifically, a light year is defined as the distance that a photon would travel, in free space and infinitely far away from any gravitational or magnetic fields, in one Julian year (365.25 days of 86400 seconds each).

## ››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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