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Convert light-year to astronomical unit

Here you can quickly calculate how many astronomical unit fit in one light-year.
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  • 1 ly = 63241.077084 AU
  • 1 AU = 0.000016 ly

Example: light-year to astronomical unit

  • 1 light-year = 63241.077084 astronomical unit

Light-year to astronomical unit conversion table

light-year astronomical unit
1 63241.077084
2 126482.154169
5 316205.385421
10 632410.770843
20 1264821.541685
50 3162053.854213
100 6324107.708427

Light-year to astronomical unit formula

To convert light-year to astronomical unit, multiply by 63241.077084.

1 ly = 63241.077084 AU
Example: 1 light-year = 63241.077084 astronomical unit

Quick light-year and astronomical unit conversion quiz

Score: 0

20 light-year equals 1 260 000 astronomical unit.

Correct answer: 20 light-year = 1 260 000 astronomical unit.

5 astronomical unit equals 0.000791 light-year.

Correct answer: 5 astronomical unit = 7.91 × 10⁻⁵ light-year.

100 light-year equals 1 260 000 astronomical unit.

Correct answer: 100 light-year = 6 320 000 astronomical unit.

1 astronomical unit equals 1.58 × 10⁻⁵ light-year.

Correct answer: 1 astronomical unit = 1.58 × 10⁻⁵ light-year.

1 astronomical unit equals 3.16 × 10⁻⁶ light-year.

Correct answer: 1 astronomical unit = 1.58 × 10⁻⁵ light-year.

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