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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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One light-year is equivalent to 9,461,000,000,000.0000 kilometers.
Kilometers would result in extremely large and unmanageable numbers when discussing cosmic distances. Light-years provide a more practical and understandable scale.
The nearest star, Proxima Centauri, is about 4.24 light-years away, which is approximately 40,116,560,000,000 kilometers.
A light-year is a unit of distance. It's the distance that light travels in a vacuum in one Earth year.
Explore the most popular unit conversions across different measurement systems - metric, imperial, and more.