Astronomy Conversions

Use this easy and mobile-friendly calculator to convert between various units of Astronomy.
Amount
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To
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1 Light Year ≈
9,460,730,472,581 Kilometers
result rounded
Decimal places
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.

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