Astronomy ConversionsUse this easy and mobile-friendly calculator to convert between various units of Astronomy.
1 Light Year ≈
Light YearsA 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.
KilometersA 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.