Free Length Converter

Light-year to astronomical unit.

One light-year equals 63241.0770843 astronomical unit. Use this converter for quick, accurate ly to au conversions.

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Precision

Conversion formula.

1 ly = 63241.0770843 au

To convert light-year to astronomical unit, multiply the value in ly by 63241.0770843.

Quick examples

1 ly = 63241.0770843 au
5 ly = 316205.385421 au
10 ly = 632410.770843 au
100 ly = 6324107.70843 au

Light-year to Astronomical Unit conversion table.

Light-year (ly)	Astronomical Unit (au)
1	63241.0770843
2	126482.154169
3	189723.231253
4	252964.308337
5	316205.385421
6	379446.462506
7	442687.53959
8	505928.616674
9	569169.693758
10	632410.770843
11	695651.847927
12	758892.925011
13	822134.002095
14	885375.07918
15	948616.156264
16	1011857.23335
17	1075098.31043
18	1138339.38752
19	1201580.4646
20	1264821.54169

Convert the other way: Astronomical Unit to Light-year

Related conversions.

Millimeter to Light-year Millimeter to Astronomical Unit Centimeter to Light-year Centimeter to Astronomical Unit Decimeter to Light-year Decimeter to Astronomical Unit

More Light-year conversions.

ly → mm ly → cm ly → dm ly → m ly → km ly → μm ly → nm ly → in

Frequently asked questions.

How many astronomical unit are in a light-year?

One light-year equals 63241.0770843 astronomical unit (au).

How do I convert ly to au?

Multiply the value in ly by 63241.0770843. For example, 10 ly = 632410.770843 au.

Is this conversion exact?

Yes. This converter uses the internationally defined factor: 1 ly = 63241.0770843 au.