Convert Light years to miles

1 light year = 5,878,625,373,183.61 miles · mi = ly × 5,878,625,373,000

ly
Miles
5,878,625,373,183.61mi

1 light year = 5,878,625,373,183.61 miles

When you need this conversion

This conversion goes from light years, the astronomical distance light travels in a year, to miles, the standard road distance unit in the US and UK. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.

Light years to miles conversion table

Conversion table from light years to miles
Light years (ly)Miles (mi)
1 ly5,878,625,373,183.61 mi
2 ly11,757,250,746,367.21 mi
3 ly17,635,876,119,550.82 mi
5 ly29,393,126,865,918.04 mi
10 ly58,786,253,731,836.08 mi
15 ly88,179,380,597,754.11 mi
20 ly117,572,507,463,672.16 mi
25 ly146,965,634,329,590.2 mi
50 ly293,931,268,659,180.4 mi
75 ly440,896,902,988,770.5 mi
100 ly587,862,537,318,360.8 mi
250 ly1.469656e15 mi
500 ly2.939313e15 mi
1,000 ly5.878625e15 mi

The formula

mi = ly × 5,878,625,373,000

Because both units measure length, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.

Convert the other way

Miles to light years →

Related length conversions

All length conversions →

Frequently asked questions

How many miles are in a light year?
There are 5,878,625,373,183.61 miles in 1 light year. The formula is mi = ly × 5,878,625,373,000.
How do you convert light years to miles?
Use the formula mi = ly × 5,878,625,373,000. For example, 10 light years equals 58,786,253,731,836.08 miles.
Is the light years to miles conversion exact?
Yes. Light years and miles are both units of length, related by an exact defined factor. Displayed results are rounded for readability.
What is ly short for?
ly is the standard symbol for light year. mi is the symbol for mile.