How does the Light Year Calculator work?

1 light-year = distance light travels in 1 year Then: = 9.461 × 10¹² km = 63,241 AU Then: 1 parsec ≈ 3.2616 light-years.

Can you give an example of how to use the Light Year Calculator?

Example: Input 1 light-year gives a result of 9.461×10¹⁵ m.

Is the Light Year Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Light Year Calculator?

Our Light Year Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

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Light Year Calculator

Light Year Converter

Converts light-years to kilometres, astronomical units (AU), and parsecs. 1 light-year = 9.461 × 10¹² km.

Symbol	Name	Unit	Description
AU	AU value	—	Variable used in the calculation

Difficulty:beginner

References

›Light Year — Wikipedia

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