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Convert astronomical unit to light-year

Here you can quickly calculate how many light-year fit in one astronomical unit.

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  • 1 AU = 0.000016 ly
  • 1 ly = 63241.077084 AU

Astronomical unit to light-year conversion table

astronomical unit light-year
1 0.000016
2 0.000032
5 0.000079
10 0.000158
20 0.000316
50 0.000791
100 0.001581

Formula to convert astronomical unit to light-year

To convert astronomical unit to light-year, multiply by 0.000016.

1 AU = 0.000016 ly
Example: 1 astronomical unit = 0.000016 light-year

Quick astronomical unit to/from light-year conversion quiz

Score: 0

10 astronomical unit equals 3.16e-5 light-year.

Correct answer: 10 astronomical unit = 0.000158 light-year.

50 astronomical unit equals 0.000158 light-year.

Correct answer: 50 astronomical unit = 0.000791 light-year.

100 light-year equals 3.16e+7 astronomical unit.

Correct answer: 100 light-year = 6.32e+6 astronomical unit.

10 astronomical unit equals 0.000158 light-year.

Correct answer: 10 astronomical unit = 0.000158 light-year.

1 astronomical unit equals 3.16e-6 light-year.

Correct answer: 1 astronomical unit = 1.58e-5 light-year.

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