Light-years to Kilometres Converter
Convert light-years to kilometres instantly. One light-year equals 9,460,730,472,580.8 kilometres, so you can type any value in ly and read the…
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Convert light-years to kilometres instantly. One light-year equals 9,460,730,472,580.8 kilometres, so you can type any value in ly and read the answer in km. The page also shows a conversion table and the exact formula used.
Worked example
Example calculated from the starting values. Enter your own values and press Calculate to get your result.
1 ly = 9,460,730,472,580.8 km
With the default inputs (value in light-years = 1 ly), the results are: kilometres 9,460,730,472,580.8 km.
Light-years to kilometres conversion table
Reference table based on the example values; it is not your calculation result.
| light-years (ly) | kilometres (km) |
|---|---|
| 1 | 9,460,730,472,580.8 |
| 2 | 18,921,460,945,161.6 |
| 5 | 47,303,652,362,904 |
| 10 | 94,607,304,725,808 |
| 25 | 236,518,261,814,520 |
| 50 | 473,036,523,629,040 |
| 100 | 946,073,047,258,080 |
| 500 | 4.7304e+15 |
| 1,000 | 9.4607e+15 |
Frequently asked questions
How many kilometres are in one light-year?
1 light-year = 9,460,730,472,580.8 kilometres.
What is the formula to convert light-years to kilometres?
Multiply the value in light-years by 9,460,730,472,580.8.
How do I convert kilometres back to light-years?
1 kilometre = 1.057e-13 light-years.
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