Convert miles (mi) to light years (ly) with formulas, examples, and conversion tables.
How to Convert miles to light years
To convert miles to light years, divide the value by 5.87879284976e12.
The Formula
light years = miles ÷ 5.87879284976e12
Key Fact
1 light year = 5.87879284976e12 miles
Tip: To convert light years back to miles, multiply by 5.87879284976e12.
About Miles and Light Years
What is a Mile?
The mile (mi) is a unit of length in the imperial system. One mile equals 1609.344 meters.
What is a Light Year?
The light year (ly) is a unit of length in the astronomical system. One light year equals 9461000000000000 meters.