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How many kilometers in 1 lightyears? Convert 1 lightyears to kilometers with our accurate calculator. Get instant, precise results for all your conversion needs.
Conversion Formula
1 ly = 9.461e+12 kmkilometer = lightyear × 94610000000001 × 9461000000000 = 9461000000000.001 lightyear = 9461000000000.00 kilometer
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1 light-year is equal to 9,461,000,000,000 kilometers.
Kilometers are too small a unit to measure the immense distances in space, making light-years a more practical and understandable scale for astronomers.
The Sun is about 0.0000158 light-years away from Earth, or roughly 150 million kilometers.
A light-year is a measurement of distance. It's the distance that light travels in a vacuum in one Julian year.
Explore the most popular unit conversions across different measurement systems - metric, imperial, and more.