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Astronomical units to light-years

Convert astronomical units to light-years, with the math shown step by step.

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Light-years
0.0000158 ly

1 au = 0.0000158 ly

Also equals

How it works

ly = au ÷ 63,241.0771

One light-year is about 63,241.0771 astronomical units, so dividing by 63,241.0771 turns astronomical units into light-years. For example, 1 au is about 0.00001581 ly.

  1. Divide by 63,241.0771 1 ÷ 63,241.0771 = 0.0000158 ly

Nearby values

Astronomical units Light-years Parsecs Miles
0.7 au 0.0000111 ly 0.00000339 65,069,065.09
0.8 au 0.0000127 ly 0.00000388 74,364,645.82
0.9 au 0.0000142 ly 0.00000436 83,660,226.55
1 au 0.0000158 ly 0.00000485 92,955,807.27
1.1 au 0.0000174 ly 0.00000533 102,251,388
1.2 au 0.000019 ly 0.00000582 111,546,968.73
1.3 au 0.0000206 ly 0.0000063 120,842,549.45

Printed from rocketcalc.io/astronomy/au-to-light-years/1