Convert km to light years
Kilometers to light years. Enter a value to convert, or use the km to light years chart further down the page.
1 kilometer equals 1.057000834e-13 light years. Going the other way, 1 light year = 9,460,730,473,000 kilometers.
How to convert km to light years
To convert kilometers to light years, multiply the kilometer value by 1.057000834e-13. You can also divide by 9460730473000 to get the same answer.
ly = km × 1.057000834e-13
Worked example
Convert 15 km to light years:
15 km = 1.585501251e-12 ly
km to light years conversion chart
Use this km to light years table for quick reference without typing anything.
| kilometers (km) | light years (ly) |
|---|---|
| 0.01 km | 1.057000834e-15 ly |
| 0.1 km | 1.057000834e-14 ly |
| 1 km | 1.057000834e-13 ly |
| 2 km | 2.114001668e-13 ly |
| 3 km | 3.171002502e-13 ly |
| 5 km | 5.28500417e-13 ly |
| 10 km | 1.057000834e-12 ly |
| 20 km | 2.114001668e-12 ly |
| 50 km | 5.28500417e-12 ly |
| 100 km | 1.057000834e-11 ly |
| 1,000 km | 1.057000834e-10 ly |
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.
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.
Frequently asked questions
How many light years are in a kilometer?
1 km equals 1.057000834e-13 light years. Going the other way, 1 light years is 9,460,730,473,000 km.
How do you convert km to light years?
To convert kilometers to light years, multiply the kilometer value by 1.057000834e-13. You can also divide by 9460730473000 to get the same answer.
What is 10 km in light years?
10 km equals 1.057000834e-12 light years. The conversion chart on this page lists the other values people look up most often.
Related length conversions
Convert km to other units
- light years to km
- km to mm
- km to cm
- km to meters
- km to inches
- km to feet
- km to yards
- km to miles
- km to micrometers
- km to nanometers
Convert other units to light years
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