light-year to astronomical unit converter

Convert light-year to astronomical unit in the Length family. See a sample calculation, unit definitions, and the interactive converter.

Example conversion: 1 ly

63241.07708 astronomical unit

This example is calculated from the same unit registry used by the interactive converter.

Formula and unit definitions

Convert metric, imperial, nautical, microscopic, surveying and astronomical lengths.

target value = source value × source factor ÷ target factor

Source unit: light-year (ly), factor 9.460730473e+15, offset 0.

Target unit: astronomical unit (au), factor 1.495978707e+11, offset 0.

Open live converter ↗

Important note

The calculation is performed locally from the listed unit definitions. Display results are rounded for readability; high-precision and regulated work should use the governing standard and appropriate significant figures.

For high-precision, regulated or safety-critical use, check the underlying standard and its required precision. Historical and approximate units are identified in their names or family descriptions.

Browse this category ↗