LENGTH CONVERSION
Light-year to Kilometer.
Convert light-year (ly) to kilometer (km), with the math explained.
1 ly = 9.460730473e12 km
THE MATH, MADE SIMPLE
How to convert light-year to kilometer
Multiply your light-year value by 9.46073047258e12 to get the equivalent in kilometer. Both units are normalized through the meter.
km = ly × 9.460730473e1210 ly = 9.46073047258e13 km
Result rounded to 12 significant digits. Change the precision in the calculator to suit your task.QUICK REFERENCE
ly to km conversion table
| Light-year (ly) | Kilometer (km) |
|---|---|
| 1 ly | 9.46073047258e12 km |
| 2 ly | 1.89214609452e13 km |
| 5 ly | 4.73036523629e13 km |
| 10 ly | 9.46073047258e13 km |
| 20 ly | 1.89214609452e14 km |
| 50 ly | 4.73036523629e14 km |
| 100 ly | 9.46073047258e14 km |
| 500 ly | 4.73036523629e15 km |
| 1,000 ly | 9.46073047258e15 km |
About the light-year
The light-year (ly) is a unit of length. One light-year equals 9.46073047258e15 meter (base unit) in this calculator.
All light-year conversionsAbout the kilometer
The kilometer (km) is a unit of length. One kilometer equals 1,000 meter (base unit) in this calculator.
All kilometer conversionsCommon questions
What is 1 ly in km?
One light-year equals 9.46073047258e12 km. Use the formula above for other values.
Why might another calculator show a different last digit?
Calculators may round at different stages or use different unit conventions. We keep full JavaScript numeric precision during calculation and round only for display. Choose up to 15 significant digits. Check US versus UK units and the notes for this category.
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