Developer Tools
Astronomical Converter
Convert astronomical distance units for space examples, lessons, sci-fi notes, and documentation.
Last updated: May 31, 2026
Client-Side Processing
Input Data Stays on Device
Instant Local Execution
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Buy me a coffeeWhat is Astronomical Converter?
This converter translates large distance units through meters as the base unit, then formats the equivalent value in your selected target unit.
How to Use Astronomical Converter
1
Enter a distance value.
2
Choose the source astronomical unit.
3
Choose the target unit.
4
Set precision.
5
Copy the result.
Common Use Cases
- Converting AU to kilometers.
- Comparing light-years and parsecs.
- Writing astronomy examples.
- Preparing sci-fi scale notes.
Example Input and Output
Convert one astronomical unit to kilometers.
Input
1 AUOutput
149,597,870.7 kmData Privacy
Distance values are converted locally in your browser.
Frequently Asked Questions
What is one AU?
This tool uses 149,597,870,700 meters for one astronomical unit.
Are parsecs included?
Yes. Parsecs are included alongside light-years and AU.
Does this use live astronomy data?
No. It uses fixed unit conversion constants.
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