How to convert Astronomical unit to Light-year

Conversion factor and calculation steps from Astronomical unit (au) to Light-year (ly).

Conversion logic

Each unit is defined via the base unit (meter (m)). The value is first converted to the base unit, then to the selected unit.

1 au = 149597870700 m

1 ly = 9.46073047e15 m

1 au × 149597870700 = 149597870700 m

149597870700 m ÷ 9.46073047e15 = 1.58125074e-5 ly