Convert 1 Light Year to Kilometers
How far is 1 light year? How long is 1 light year in kilometers? 1 ly to km conversion.
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1 Light Year ≈
9,460,730,472,581 Kilometers
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Result in Plain English
1 light year is equal to about 9.46 trillion kilometers.
In Scientific Notation
1 light year
= 1 x 100 light years
≈ 9.46073 x 1012 kilometers
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.