Here you can convert the Unit of length Light year into the unit Astronomical unit and vice versa you can convert Astronomical unit into Light year. By clicking the "Swap units" icon, you will always obtain the desired conversion in the calculation result, i.e., ly to AU or AU to ly. With the following calculator you can also calculate any other Unit of length.
Info about "Light year"
A light-year refers to the distance of light (in a vacuum) within one year. There are different definitions for a year (Gregorian year, tropical year, Julian year etc.), therefore the Julian year (365.25 days) was used as a definition for the light year. A light-year is converted to 9,460,730,472,580.8 km, around 9.5 trillion km. For example, the Milky Way is 100,000 light-years long because distance is difficult to measure in kilometers.
Info about "Astronomical unit"
The astronomical unit (AU) is a unit of length in astronomy. By definition, the AU is 149,597,870,700 meters long, which is almost the average distance between the Earth and Sun.
Apart from the light-year and the parsec, the astronomical unit is one of the most important astronomical units of length. AU has been very important in history because most measurements were performed using AU and not meters. In 2012, the conversion between astronomical units and meters is precisely calculated and AU is no longer an advantage. However, the distance in the Solar System is still often specified in AU because of its more practical values.
Basis for conversion Light year (ly) to Astronomical unit (AU) and vice versa
The abbreviation for the "Unit of length Light year" is ly. The abbreviation for the "Unit of length Astronomical unit" is AU.
Formula for the conversion of Light year (ly) to Astronomical unit (AU) and vice versa
The calculation from Light year to Astronomical unit shall be made using the following conversion formula:
Conversion formula Light year to Astronomical unit |
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Determine the number of Astronomical unit from Light year Light year × 63241.077084266 |
Formula for the conversion of Astronomical unit (AU) to Light year (ly)
The calculation from Astronomical unit to Light year shall be made using the following conversion formula:
Conversion formula Astronomical unit to Light year |
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Determine the number of Light year from Astronomical unit Astronomical unit × 1.5812507409821E-5 |
Overview table : How many Light year are in Astronomical unit ?
Light year ly ⇒ Astronomical unit AU |
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0.01 ly are 632.41077 AU |
0.02 ly are 1 264.82154 AU |
0.03 ly are 1 897.23231 AU |
0.04 ly are 2 529.64308 AU |
0.05 ly are 3 162.05385 AU |
0.06 ly are 3 794.46462 AU |
0.07 ly are 4 426.87539 AU |
0.08 ly are 5 059.28616 AU |
0.09 ly are 5 691.69693 AU |
0.10 ly are 6 324.10770 AU |
0.20 ly are 12 648.21541 AU |
0.30 ly are 18 972.32312 AU |
0.40 ly are 25 296.43083 AU |
0.50 ly are 31 620.53854 AU |
0.60 ly are 37 944.64625 AU |
0.70 ly are 44 268.75395 AU |
0.80 ly are 50 592.86166 AU |
0.90 ly are 56 916.96937 AU |
1 ly corresponds to 63 241.07708 AU |
2 ly are 126 482.15416 AU |
3 ly are 189 723.23125 AU |
4 ly are 252 964.30833 AU |
5 ly are 316 205.38542 AU |
6 ly are 379 446.46250 AU |
7 ly are 442 687.53959 AU |
8 ly are 505 928.61667 AU |
9 ly are 569 169.69375 AU |
10 ly are 632 410.77084 AU |
20 ly are 1 264 821.54168 AU |
30 ly are 1 897 232.31252 AU |
40 ly are 2 529 643.08337 AU |
50 ly are 3 162 053.85421 AU |
60 ly are 3 794 464.62505 AU |
70 ly are 4 426 875.39589 AU |
80 ly are 5 059 286.16674 AU |
90 ly are 5 691 696.93758 AU |
100 ly are 6 324 107.70842 AU |
200 ly are 12 648 215.41685 AU |
300 ly are 18 972 323.12528 AU |
400 ly are 25 296 430.83370 AU |
500 ly are 31 620 538.54213 AU |
600 ly are 37 944 646.25056 AU |
700 ly are 44 268 753.95898 AU |
800 ly are 50 592 861.66741 AU |
900 ly are 56 916 969.37583 AU |
1 000 ly are 63 241 077.08426 AU |
Overview table : How many Astronomical unit are in Light year ?
Astronomical unit AU ⇒ Light year ly |
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0.01 AU are 0.000000158125074 ly |
0.02 AU are 0.000000316250148 ly |
0.03 AU are 0.000000474375222 ly |
0.04 AU are 0.000000632500296 ly |
0.05 AU are 0.000000790625370 ly |
0.06 AU are 0.000000948750444 ly |
0.07 AU are 0.000001106875518 ly |
0.08 AU are 0.000001265000592 ly |
0.09 AU are 0.000001423125666 ly |
0.10 AU are 0.000001581250741 ly |
0.20 AU are 0.000003162501482 ly |
0.30 AU are 0.000004743752222 ly |
0.40 AU are 0.000006325002963 ly |
0.50 AU are 0.000007906253704 ly |
0.60 AU are 0.000009487504445 ly |
0.70 AU are 0.000011068755186 ly |
0.80 AU are 0.000012650005927 ly |
0.90 AU are 0.000014231256668 ly |
1 AU corresponds to 0.000015812507409 ly |
2 AU are 0.000031625014819 ly |
3 AU are 0.000047437522229 ly |
4 AU are 0.000063250029639 ly |
5 AU are 0.000079062537049 ly |
6 AU are 0.000094875044458 ly |
7 AU are 0.000110687551868 ly |
8 AU are 0.000126500059278 ly |
9 AU are 0.000142312566688 ly |
10 AU are 0.000158125074098 ly |
20 AU are 0.000316250148196 ly |
30 AU are 0.000474375222294 ly |
40 AU are 0.000632500296392 ly |
50 AU are 0.000790625370491 ly |
60 AU are 0.000948750444589 ly |
70 AU are 0.001106875518687 ly |
80 AU are 0.001265000592785 ly |
90 AU are 0.001423125666883 ly |
100 AU are 0.001581250740982 ly |
200 AU are 0.003162501481964 ly |
300 AU are 0.004743752222946 ly |
400 AU are 0.006325002963928 ly |
500 AU are 0.007906253704910 ly |
600 AU are 0.009487504445892 ly |
700 AU are 0.011068755186874 ly |
800 AU are 0.012650005927856 ly |
900 AU are 0.014231256668838 ly |
1 000 AU are 0.015812507409820 ly |
Source information
As source for the information in the "Units of length" category, we have used in particular:
Last update on May 4, 2022
The pages of the "Units of length" category were last editorially reviewed by Stefan Banse on May 4, 2022. They all correspond to the current status.
Previous changes on October 21, 2021
- November 5, 2020: Publication of the Length converter
- Editorial revision of all texts in this category