Astronomical Units to Light Years Converter
CommonMeters, feet, miles and other distances.
How to convert Astronomical Units to Light Years
Multiply the astronomical units value by 1.5812e-5: 1 AU = 1.5812e-5 ly. Going the other way, 1 ly = 63,242 AU, so divide by 1.5812e-5 or use the Light Years to Astronomical Units converter.
About these units
Astronomical Units (AU)
An astronomical unit is the average distance from the Earth to the Sun, defined as exactly 149,597,870.7 kilometers. Distances within the Solar System are usually given in AU.
Light Years (ly)
A light-year is the distance light travels through a vacuum in one Julian year, about 9.461 trillion kilometers. Despite the name it measures distance, not time, and is used for stars and galaxies.
Astronomical Units to Light Years conversion table
| Astronomical Units (AU) | Light Years (ly) |
|---|---|
| 1 AU | 1.5812e-5 ly |
| 2 AU | 3.1625e-5 ly |
| 3 AU | 4.7437e-5 ly |
| 4 AU | 6.3249e-5 ly |
| 5 AU | 7.9061e-5 ly |
| 10 AU | 0.000158123 ly |
| 20 AU | 0.000316246 ly |
| 25 AU | 0.000395307 ly |
| 50 AU | 0.000790614 ly |
| 100 AU | 0.00158123 ly |
| 500 AU | 0.00790614 ly |
| 1,000 AU | 0.0158123 ly |