Astronomical Unit to Light-year Converter

1 au = 0.0000158125 ly

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FORMULA

1 au = 0.0000158125 ly
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CONVERSION TABLE

Astronomical Unit (au) Light-year (ly)
1 au 0.0000158125 ly
5 au 0.0000790625 ly
10 au 0.0001581251 ly
25 au 0.0003953127 ly
50 au 0.0007906254 ly
100 au 0.0015812507 ly
250 au 0.0039531269 ly
500 au 0.0079062537 ly
1,000 au 0.015813 ly
Light-year to Astronomical Unit
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COMMON VALUES

1 au
= 0.0000158125 ly
2 au
= 0.000031625 ly
3 au
= 0.0000474375 ly
4 au
= 0.00006325 ly
5 au
= 0.0000790625 ly
6 au
= 0.000094875 ly
7 au
= 0.0001106876 ly
8 au
= 0.0001265001 ly
9 au
= 0.0001423126 ly
10 au
= 0.0001581251 ly
12 au
= 0.0001897501 ly
15 au
= 0.0002371876 ly
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About Astronomical Unit (au)

Originally based on Earth's mean distance from the Sun, the astronomical unit (AU) was fixed in 2012 at exactly 149,597,870,700 meters. Planetary scientists use AUs to express distances within the solar system: Mars orbits at about 1.52 AU, Jupiter at 5.2 AU, and the outer edge of the Kuiper Belt at roughly 50 AU.

About Light-year (ly)

The distance light travels in one Julian year -- approximately 9.461 trillion kilometers -- the light-year is the standard unit for expressing interstellar distances. Proxima Centauri, the nearest star beyond the Sun, lies about 4.24 light-years away. Despite its name, the light-year measures distance, not time.

How to Convert Astronomical Unit to Light-year

The conversion formula is: 1 au = 0.0000158125 ly. To convert from Astronomical Unit (au) to Light-year (ly), use the formula above or the interactive converter at the top of this page.

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FAQ

How many Light-year in 1 Astronomical Unit?

1 Astronomical Unit (au) equals 0.0000158125 Light-year (ly).

How to convert Astronomical Unit to Light-year?

Multiply the Astronomical Unit value by 0.0000158125 to get the equivalent in Light-year. Formula: 1 au = 0.0000158125 ly

What is the formula for Astronomical Unit to Light-year conversion?

1 au = 0.0000158125 ly

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