Astronomical units to Light-years converter
au to ly conversion table
| au | ly |
|---|---|
| 1 | 0.00002 |
| 2 | 0.00003 |
| 3 | 0.00005 |
| 4 | 0.00006 |
| 5 | 0.00008 |
| 6 | 0.00009 |
| 7 | 0.00011 |
| 8 | 0.00013 |
| 9 | 0.00014 |
| 10 | 0.00016 |
| 11 | 0.00017 |
| 12 | 0.00019 |
| 13 | 0.00021 |
| 14 | 0.00022 |
| 15 | 0.00024 |
| 16 | 0.00025 |
| 17 | 0.00027 |
| 18 | 0.00028 |
| 19 | 0.0003 |
| 20 | 0.00032 |
| 21 | 0.00033 |
| 22 | 0.00035 |
| 23 | 0.00036 |
| 24 | 0.00038 |
| 25 | 0.0004 |
| 26 | 0.00041 |
| 27 | 0.00043 |
| 28 | 0.00044 |
| 29 | 0.00046 |
| 30 | 0.00047 |
| 31 | 0.00049 |
| 32 | 0.00051 |
| 33 | 0.00052 |
| 34 | 0.00054 |
| 35 | 0.00055 |
| 36 | 0.00057 |
| 37 | 0.00059 |
| 38 | 0.0006 |
| 39 | 0.00062 |
| 40 | 0.00063 |
| 41 | 0.00065 |
| 42 | 0.00066 |
| 43 | 0.00068 |
| 44 | 0.0007 |
| 45 | 0.00071 |
| 46 | 0.00073 |
| 47 | 0.00074 |
| 48 | 0.00076 |
| 49 | 0.00077 |
| 50 | 0.00079 |
| 51 | 0.00081 |
| 52 | 0.00082 |
| 53 | 0.00084 |
| 54 | 0.00085 |
| 55 | 0.00087 |
| 56 | 0.00089 |
| 57 | 0.0009 |
| 58 | 0.00092 |
| 59 | 0.00093 |
| 60 | 0.00095 |
| 61 | 0.00096 |
| 62 | 0.00098 |
| 63 | 0.001 |
| 64 | 0.00101 |
| 65 | 0.00103 |
| 66 | 0.00104 |
| 67 | 0.00106 |
| 68 | 0.00108 |
| 69 | 0.00109 |
| 70 | 0.00111 |
| 71 | 0.00112 |
| 72 | 0.00114 |
| 73 | 0.00115 |
| 74 | 0.00117 |
| 75 | 0.00119 |
| 76 | 0.0012 |
| 77 | 0.00122 |
| 78 | 0.00123 |
| 79 | 0.00125 |
| 80 | 0.00127 |
| 81 | 0.00128 |
| 82 | 0.0013 |
| 83 | 0.00131 |
| 84 | 0.00133 |
| 85 | 0.00134 |
| 86 | 0.00136 |
| 87 | 0.00138 |
| 88 | 0.00139 |
| 89 | 0.00141 |
| 90 | 0.00142 |
| 91 | 0.00144 |
| 92 | 0.00145 |
| 93 | 0.00147 |
| 94 | 0.00149 |
| 95 | 0.0015 |
| 96 | 0.00152 |
| 97 | 0.00153 |
| 98 | 0.00155 |
| 99 | 0.00157 |
| 100 | 0.00158 |
| 101 | 0.0016 |
| 102 | 0.00161 |
| 103 | 0.00163 |
| 104 | 0.00164 |
| 105 | 0.00166 |
| 106 | 0.00168 |
| 107 | 0.00169 |
| 108 | 0.00171 |
To convert astronomical units to light-years, enter the value in the first field. The result in light-years is calculated automatically using the exact conversion factor.
1 au ≈ 0.0000158125074098 ly
1 ly ≈ 63241.0770843 au
Formula: ly ≈ au × 0.0000158125074098
au ≈ ly × 63241.0770843
Definitions: 1 au = 149597870700 m; 1 ly = 9.4607304725808 × 1015 m
The astronomical unit (au) is defined as exactly 149,597,870,700 meters and is close to the average distance from Earth to the Sun. It is used for distances inside the solar system, such as planetary orbits.
The light-year (ly) is the distance light travels in a vacuum in one Julian year (365.25 days), about 9.46 trillion kilometers. It is used for distances between stars and galaxies; the nearest stars beyond the Sun are roughly 4 light-years away.
See the conversion table with commonly used values, handy for quick reference or study.