Astronomy Conversions

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Amount

1 Light Year =

9.4607305 x 10¹² Kilometers

(rounded to 8 digits)

Display result as

A light year is the distance that light travels in one year. The year used by the International Astronomical Union is 365.25 days. Therefore a light year is exactly 9,460,730,472,580.8 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.

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Astronomy Conversion Tables

(some results are rounded)

1 Astronomical Unit =
149,597,871 kilometers
8.3167 light minutes
499.00 light seconds
1.6 x 10^-5 light years
92,955,807 miles
5 x 10^-6 parsecs

1 Kilometer =
0 astronomical units
0 light minutes
3 x 10^-6 light seconds
0 light years
0.62137 miles
0 parsecs

1 Light Minute =
0.12024 astronomical units
17,987,547 kilometers
60 light seconds
2 x 10^-6 light years
11,176,944 miles
1 x 10^-6 parsecs

1 Light Second =
0.002004 astronomical units
299,792 kilometers
0.016667 light minutes
0 light years
186,282 miles
0 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 =
0 astronomical units
1.6093 kilometers
0 light minutes
5 x 10^-6 light seconds
0 light years
0 parsecs

1 Parsec =
206,265 astronomical units
3.0857 x 10¹³ kilometers
1,715,452 light minutes
102,927,125 light seconds
3.2616 light years
1.9174 x 10¹³ miles