To convert light years to astronomical units, multiply the value by 63,241.1. To go the other way, multiply astronomical units by 1.58125 × 10⁻⁵ to get light years.
| Light Years (ly) | Astronomical Units (AU) |
|---|---|
| 1 ly | 63,241.1 AU |
| 2 ly | 126,482 AU |
| 3 ly | 189,723 AU |
| 4 ly | 252,964 AU |
| 5 ly | 316,205 AU |
| 6 ly | 379,446 AU |
| 7 ly | 442,688 AU |
| 8 ly | 505,929 AU |
| 9 ly | 569,170 AU |
| 10 ly | 632,411 AU |
| 12 ly | 758,893 AU |
| 14 ly | 885,375 AU |
| 15 ly | 948,616 AU |
| 20 ly | 1,264,820 AU |
| 21 ly | 1,328,060 AU |
| 24 ly | 1,517,790 AU |
| 25 ly | 1,581,030 AU |
| 30 ly | 1,897,230 AU |
| 40 ly | 2,529,640 AU |
| 50 ly | 3,162,050 AU |
| 60 ly | 3,794,460 AU |
| 75 ly | 4,743,080 AU |
| 80 ly | 5,059,290 AU |
| 100 ly | 6,324,110 AU |
| 200 ly | 12,648,200 AU |
| 250 ly | 15,810,300 AU |
| 300 ly | 18,972,300 AU |
| 400 ly | 25,296,400 AU |
| 500 ly | 31,620,500 AU |
| 750 ly | 47,430,800 AU |
| 1,000 ly | 63,241,100 AU |
Light year (ly). A light year is the distance light travels in one year, about 9.46 trillion kilometers.
Astronomical unit (AU). An astronomical unit is the average distance from the Earth to the Sun, about 149.6 million kilometers.
There are 63,241.1 astronomical units in one light year.
Multiply the number of light years by 63,241.1. For example, 10 light years equal 632,411 astronomical units.
One astronomical unit equals 1.58125 × 10⁻⁵ light years.
758,893 astronomical units. Other common values: 5 light years = 316,205 astronomical units and 100 light years = 6,324,110 astronomical units.