## ››Convert light year to megalight year

 light-year megalight-year

How many light-year in 1 megalight-year? The answer is 999315.53730322.
We assume you are converting between light year and megalight year.
You can view more details on each measurement unit:
light-year or megalight-year
The SI base unit for length is the metre.
1 metre is equal to 1.0570008340246E-16 light-year, or 1.0577248071986E-22 megalight-year.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between light years and megalight years.
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You can do the reverse unit conversion from megalight-year to light-year, or enter any two units below:

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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: Megalight-year

One megalight-year, abbreviated "Mly", is one million light-years, or 306,601 parsecs. Megalight-years are typically used to measure distances between neighboring galaxies and galaxy clusters.

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