Length Converter
Result
... Light Year = ... Kilometer
Result
... Light Year
=
... Kilometer
Find the units to convert
Light Year to Kilometer Converter
Use this page to convert light year values into kilometer, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 ly = 9,460,730,472,581 km
1 km = 1.05700083402462e-13 ly
Example: 15 ly = 141,910,957,088,712 km
Light Year
A light year is the distance light travels in vacuum in one Julian year.
History: The light year became a readable way to express distances between stars and galaxies.
Current use: Light years are used in astronomy, science education, and popular explanations of cosmic distance.
Also written as ly, lightyear, lightyears, light years.
Kilometer
A kilometer equals 1,000 meters.
History: It became standard alongside metric road systems.
Current use: Kilometers are used for travel, route planning, and geography.
Also written as km, kms, kilometers, kilometre, kilometres.
Light Year to Kilometer table
| Light Year [ly] | Kilometer [km] |
|---|
| 0.01 ly | 94,607,304,725.808 km |
| 0.1 ly | 946,073,047,258.08 km |
| 1 ly | 9,460,730,472,581 km |
| 2 ly | 18,921,460,945,162 km |
| 5 ly | 47,303,652,362,904 km |
| 10 ly | 94,607,304,725,808 km |
| 20 ly | 189,214,609,451,616 km |
| 50 ly | 473,036,523,629,040 km |
| 100 ly | 946,073,047,258,080 km |
Frequently asked questions
How many Kilometer (km) are in one Light Year (ly)?
One Light Year equals 9,460,730,472,581 Kilometer.
How do you convert Light Year to Kilometer?
Multiply the Light Year value by 9,460,730,472,581 to get the result in Kilometer.
How do you convert Kilometer back to Light Year?
Multiply the Kilometer value by 1.05700083402462e-13 to get back to Light Year.
What is 15 Light Year in Kilometer?
15 Light Year equals 141,910,957,088,712 Kilometer.
