Astronomy Conversions

Use this easy and mobile-friendly calculator to convert between various units of Astronomy.
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1 Light Year ≈
9,460,730,472,581 Kilometers
result rounded
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Light Years
A light year is the distance that light travels in one year. The year used by the International Astronomical Union is 365.25 days. A light year is defined as exactly 9,460,730,472,580.8 kilometers.
Kilometers
A kilometer, or kilometre, is a unit of length equal to 1,000 meters, or about 0.621 miles. In most of the world, it is the most common unit for measuring distance between places.

Browse Astronomy Conversions

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Astronomy Conversion Tables

some results are rounded
1 Astronomical Unit
149,600,000 kilometers
8.3167 light minutes
499.00 light seconds
0.000015813 light years
92,956,000 miles
4.8481 x 10-6 parsecs
1 Kilometer
6.6846 x 10-9 astronomical units
5.5594 x 10-8 light minutes
3.3356 x 10-6 light seconds
1.0570 x 10-13 light years
0.62137 miles
3.2408 x 10-14 parsecs
1 Light Minute
0.12024 astronomical units
17,988,000 kilometers
60 light seconds
1.9013 x 10-6 light years
11,177,000 miles
5.8294 x 10-7 parsecs
1 Light Second
0.0020040 astronomical units
299,790 kilometers
0.016667 light minutes
3.1688 x 10-8 light years
186,280 miles
9.7156 x 10-9 parsecs
1 Light Year
63,241 astronomical units
9.4607 x 1012 kilometers
525,960 light minutes
31,557,600 light seconds
5.8786 x 1012 miles
0.30660 parsecs
1 Mile
1.0758 x 10-8 astronomical units
1.6093 kilometers
8.9470 x 10-8 light minutes
5.3682 x 10-6 light seconds
1.7011 x 10-13 light years
5.2155 x 10-14 parsecs
1 Parsec
206,260 astronomical units
3.0857 x 1013 kilometers
1,715,500 light minutes
102,930,000 light seconds
3.2616 light years
1.9174 x 1013 miles
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