LENGTH CONVERSION
Kilometer to Light-year.
Convert kilometer (km) to light-year (ly), with the math explained.
1 km = 1.057000834e-13 ly
THE MATH, MADE SIMPLE
How to convert kilometer to light-year
Multiply your kilometer value by 1.05700083402e-13 to get the equivalent in light-year. Both units are normalized through the meter.
ly = km × 1.057000834e-1310 km = 1.05700083402e-12 ly
Result rounded to 12 significant digits. Change the precision in the calculator to suit your task.QUICK REFERENCE
km to ly conversion table
| Kilometer (km) | Light-year (ly) |
|---|---|
| 1 km | 1.05700083402e-13 ly |
| 2 km | 2.11400166805e-13 ly |
| 5 km | 5.28500417012e-13 ly |
| 10 km | 1.05700083402e-12 ly |
| 20 km | 2.11400166805e-12 ly |
| 50 km | 5.28500417012e-12 ly |
| 100 km | 1.05700083402e-11 ly |
| 500 km | 5.28500417012e-11 ly |
| 1,000 km | 1.05700083402e-10 ly |
About the kilometer
The kilometer (km) is a unit of length. One kilometer equals 1,000 meter (base unit) in this calculator.
All kilometer conversionsAbout 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 conversionsCommon questions
What is 1 km in ly?
One kilometer equals 1.05700083402e-13 ly. 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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