Light Year Conversions

Use this easy and mobile-friendly calculator to convert between Light Years and other units of Astronomy.
Amount
From
To
swap units ↺
1 Light Year ≈
9,460,730,472,581 Kilometers
result rounded
Decimal places
Light Years
A light year is the distance that light travels in one year. The year used by the International Astronomical Union is 365.25 days. A light year is defined as exactly 9,460,730,472,580.8 kilometers.
Kilometers
A kilometer, or kilometre, is a unit of length equal to 1,000 meters, or about 0.621 miles. In most of the world, it is the most common unit for measuring distance between places.

Convert Light Years to