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Astronomy · Converter

Light Year to Astronomical Unit

Convert light year (ly) to astronomical unit (AU) instantly with our free online Astronomy converter.

Light Year to Astronomical Unit

1 ly = — AU

Easily convert light year to astronomical unit using this precise, free online tool. Enter a value and get an instant result. The conversion factor used is 1 ly = 1.581251e-5 AU.

Formula

value in AU = value in ly × 0.000015812509181138144

How to convert

  1. Enter the value you want to convert in the "From" field.
  2. Select the source unit from the dropdown.
  3. Select the target unit in the "To" dropdown.
  4. The result updates instantly in real time.

Conversion Table

UnitAbbreviationValue
Light Yearly1
Astronomical UnitAU1.5813e-5

FAQ

How many astronomical unit are in 1 light year?+

1 Light Year (ly) equals 0.0000158125 Astronomical Unit (AU).

How do I convert light year to astronomical unit?+

Multiply the value in Light Year by 0.000015812509181138144 to get the equivalent value in Astronomical Unit.

Is this Light Year to Astronomical Unit converter accurate?+

Yes, this converter uses precise, internationally recognized conversion factors for accurate results.

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