ConvertNavi

Astronomical unit to Light-year (AU → ly)

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

Realtime·length·astronomical
Exact
AU
× 0
ly
0.00001581
Precision [auto]
6

📐AU to ly formulaExact

ly = AU × 1.581251e-5
Inverse: AU = ly × 63241.077084266275

Worked example: 1 AU = 1.581251e-5 ly

ℹ️About these units

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

📊Reference table: AU → ly

Astronomical unit (AU)Light-year (ly)
10.00001581
20.00003163
50.00007906
100.00015813
150.00023719
200.00031625
250.00039531
500.00079063
1000.001581
2500.003953
5000.007906
7500.011859
1,0000.015813

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

🔁Reverse & related

Reverse: ly → AUAU → mAU → kmAU → dmAU → cmAU → mmAU → μmAU → nmAU → in

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