Light-Year Converter
Result
Kilometres9.4607304726e+12
Astronomical units63241.077084266
Parsecs0.3066013938
↗ Space
Convert light-years into kilometres, astronomical units and parsecs.
Formula
km = light-years × 9.4607304725808 × 10¹²
- A light-year is the distance light travels in one Julian year. This calculator uses 9.4607304725808 × 10¹² km per light-year.
- The main inputs are Distance. Enter them in the units and format shown in the calculator.
- Use the units, labels and assumptions shown beside each input so the formula is applied consistently.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Light-Year
Inputs
- Distance: 1 light-years
1 light-year is about 9.46 trillion km, 63,241 AU or 0.3066 parsec.
Sample result: Calculating…
Frequently asked questions
What does this calculator estimate?
It converts light-years to common astronomical distance units.
Is this an exact mission-planning tool?
No. It is an educational calculator based on the stated constants and simplified assumptions.
How accurate is the result?
The constants are standard high-precision conversions; displayed results may be rounded.
What does the Light-Year calculate?
Convert light-years into kilometres, astronomical units and parsecs.
Which values should I enter?
Enter Distance using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: km = light-years × 9.4607304725808 × 10¹².