Convert 1 Astronomical unit to Light Year (1 au to light-year)
Looking to convert 1 astronomical unit (au) to light year (light-year)? This page provides the accurate result and a detailed explanation of how the conversion is done. Use this information to understand the relationship between Astronomical unit and Light Year and how to calculate conversions manually or using online tools.

Looking to convert 1 astronomical unit (au) to light year (light-year)? This page provides the accurate result and a detailed explanation of how the conversion is done. Use this information to understand the relationship between Astronomical unit and Light Year and how to calculate conversions manually or using online tools.
What is Astronomical unit to Light Year Conversion?
Astronomical unit (au) and light year (light-year) are both units used to measure length, but they serve different purposes depending on the scale of the measurement. If you ever need to convert astronomical unit to light year, knowing the exact conversion formula is essential.
Au to light-year Conversion Formula:
One Astronomical unit is equal to 0.0000158125074098207 Light Year.
Formula: 1 au = 0.0000158125074098207 light-year
By using this conversion factor, you can easily convert any length from astronomical unit to light year with precision.
Convert 1 Astronomical unit to Light Year
To convert 1 astronomical unit to light year, multiply the value by 0.0000158125074098207 since:
1 astronomical unit = 0.0000158125074098207 light year
So:
1 × 0.0000158125074098207 = 0.0000158125074098207
Result: 1 astronomical unit = 0.0000158125074098207 light year
Reverse Conversion
Need the reverse result? You can also convert light year back to astronomical unit by dividing 0.0000158125074098207:
0.0000158125074098207 light year ÷ 0.0000158125074098207 = 1 astronomical unit
For more, visit: Light Year to Astronomical unit
Explore Related Conversion Tool
This page focuses specifically on converting 1 Astronomical unit to Light Year. If you're looking to convert a different value, you can use our general conversion tool:
Frequently Asked Questions
What is 1 astronomical unit in light year?
1 astronomical unit is equal to 0.0000158125074098207 light year.
How do I convert astronomical unit to light year?
Multiply the value in astronomical unit by 0.0000158125074098207 to get the equivalent in light year.