Astronomical Distance Converter
This converter translates cosmic distances between light years, parsecs, astronomical units (AU), lunar distances, kilometres and miles — useful for students, amateur astronomers and anyone reading space news that mixes these units.
Result will appear here.
How to use
- Enter a distance value and pick the From unit (for example, light years).
- Choose the From and To units — the result updates live.
- See the converted values in all units below.
Note: 1 light year is the distance light travels in one year.
Tips
- Use the Swap button to reverse the conversion instantly without retyping the value.
- The list below the result shows the same distance in every unit — handy for comparing cosmic scales at a glance.
- Very large answers appear in scientific notation (for example 9.46e+12). As a sanity check, 1 parsec equals about 3.26 light years.