Convert Light Year to Astronomical Unit - Free Calculator
Fast, accurate length conversion calculator. Convert light year to astronomical unit instantly with precise results.
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How to Convert Light Year to Astronomical Unit
Use this free online calculator to convert Light Year to Astronomical Unit instantly. This length conversion tool provides accurate results for all your measurement needs.
Quick Reference
Light Year to Astronomical Unit Conversion Formula
To convert Light Year to Astronomical Unit, multiply by 63,197.8.
To convert Astronomical Unit back to Light Year, divide by 63,197.8 (or multiply by 0.0000158233).
About These Units
About Light Year
The distance that light, moving at a constant speed of 300,000 km/s, travels in one year. One light year is about 10 trillion kilometers.
About Astronomical Unit
An Astronomical Unit is approximately the mean distance between the Earth and the Sun. It is a derived constant and used to indicate distances within the solar system. Its formal definition is the radius of an unperturbed circular orbit a massless body would revolve about the sun in 2*(pi)/k days (i.e., 365.2568983.... days), where k is defined as the Gaussian constant exactly equal to 0.01720209895. Since an AU is based on radius of a circular orbit, one AU is actually slightly less than the average distance between the Earth and the Sun (approximately 150 million km or 93 million miles).
Light Year to Astronomical Unit Conversion Table
| Light Year | Astronomical Unit | Astronomical Unit | Light Year |
|---|---|---|---|
| 0.1 | 6,319.78 | 0.1 | 0.00000158233 |
| 0.5 | 31,598.9 | 0.5 | 0.00000791167 |
| 1 | 63,197.8 | 1 | 0.0000158233 |
| 2 | 126,396 | 2 | 0.0000316467 |
| 5 | 315,989 | 5 | 0.0000791167 |
| 10 | 631,978 | 10 | 0.000158233 |
| 20 | 1,263,960 | 20 | 0.000316467 |
| 25 | 1,579,940 | 25 | 0.000395583 |
| 50 | 3,159,890 | 50 | 0.000791167 |
| 100 | 6,319,780 | 100 | 0.00158233 |
| 250 | 15,799,400 | 250 | 0.00395583 |
| 500 | 31,598,900 | 500 | 0.00791167 |
| 1000 | 63,197,800 | 1000 | 0.0158233 |
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