Convert light years to km
Light years to kilometers. Enter a value to convert, or use the light years to km chart further down the page.
1 light year equals 9,460,730,473,000 kilometers. Going the other way, 1 kilometer = 1.057000834e-13 light years.
How to convert light years to km
To convert light years to kilometers, multiply the light year value by 9460730473000. You can also divide by 1.057000834e-13 to get the same answer.
km = ly × 9460730473000
Worked example
Convert 15 ly to kilometers:
15 ly = 141,910,957,100,000 km
light years to km conversion chart
Use this light years to km table for quick reference without typing anything.
| light years (ly) | kilometers (km) |
|---|---|
| 0.01 ly | 94,607,304,730 km |
| 0.1 ly | 946,073,047,300 km |
| 1 ly | 9,460,730,473,000 km |
| 2 ly | 18,921,460,950,000 km |
| 3 ly | 28,382,191,420,000 km |
| 5 ly | 47,303,652,360,000 km |
| 10 ly | 94,607,304,730,000 km |
| 20 ly | 189,214,609,500,000 km |
| 50 ly | 473,036,523,600,000 km |
| 100 ly | 946,073,047,300,000 km |
| 1,000 ly | 9.460730473e15 km |
What is a light year?
A light year is the distance light travels in one Julian year: 9,460,730,472,580,800 meters, or about 9.46 trillion kilometers.
What is a kilometer?
The kilometer is one thousand meters and is the standard unit for road distances and long-range measurement almost everywhere outside the United States and the United Kingdom.
Frequently asked questions
How many km are in a light year?
1 light years equals 9,460,730,473,000 km. Going the other way, 1 km is 1.057000834e-13 light years.
How do you convert light years to km?
To convert light years to kilometers, multiply the light year value by 9460730473000. You can also divide by 1.057000834e-13 to get the same answer.
What is 10 light years in km?
10 light years equals 94,607,304,730,000 km. The conversion chart on this page lists the other values people look up most often.
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