Light Years to Astronomical Units Converter
CommonMeters, feet, miles and other distances.
How to convert Light Years to Astronomical Units
Multiply the light years value by 63,242: 1 ly = 63,242 AU. Going the other way, 1 AU = 1.5812e-5 ly, so divide by 63,242 or use the Astronomical Units to Light Years converter.
About these units
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 (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 to Astronomical Units conversion table
| Light Years (ly) | Astronomical Units (AU) |
|---|---|
| 1 ly | 63,242 AU |
| 2 ly | 126,484 AU |
| 3 ly | 189,726 AU |
| 4 ly | 252,968 AU |
| 5 ly | 316,210 AU |
| 10 ly | 632,420 AU |
| 20 ly | 1.2648e+6 AU |
| 25 ly | 1.581e+6 AU |
| 50 ly | 3.1621e+6 AU |
| 100 ly | 6.3242e+6 AU |
| 500 ly | 3.1621e+7 AU |
| 1,000 ly | 6.3242e+7 AU |