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Light-year to Astronomical unit (ly → AU)

Convert light-year to astronomical unit instantly. The conversion factor below is exact by international definition.

Realtime·length·astronomical
Exact
ly
× 63,241.0771
AU
63,241.08
Precision [auto]
6

📐ly to AU formulaExact

AU = ly × 63241.077084266282
Inverse: ly = AU × 1.581251e-5

Worked example: 1 ly = 63241.077084266282 AU

ℹ️About these units

Light-year (ly)
Source: IAU: 1 ly = 365.25 d × c (exact).
Astronomical unit (AU)
Source: IAU 2012 definition.

📊Reference table: ly → AU

Light-year (ly)Astronomical unit (AU)
163,241.08
2126,482.15
5316,205.39
10632,410.77
15948,616.16
201,264,821.54
251,581,026.93
503,162,053.85
1006,324,107.71
25015,810,269.27
50031,620,538.54
75047,430,807.81
1,00063,241,077.08

Want a downloadable CSV? Append ?format=csv to the API /api/v1/table endpoint.

🔁Reverse & related

Reverse: AU → lyly → mly → kmly → dmly → cmly → mmly → μmly → nmly → in

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