Convert light years (ly) to astronomical units (AU) with formulas, examples, and conversion tables.
How to Convert light years to astronomical units
To convert light years to astronomical units, multiply the value by 63241.9786096.
The Formula
astronomical units = light years × 63241.9786096
Key Fact
1 light year = 63241.9786096 astronomical units
Tip: To convert astronomical units back to light years, divide by 63241.9786096.
About Light Years and Astronomical Units
What is a Light Year?
The light year (ly) is a unit of length in the astronomical system. One light year equals 9461000000000000 meters.
What is a Astronomical Unit?
The astronomical unit (AU) is a unit of length in the astronomical system. One astronomical unit equals 149600000000 meters.