Light Year Calculator

Light-Year Converter

Convert between light years, kilometers, astronomical units and parsecs.

2026-05-06T10:07:27.546Z

Converted Values

Light Years

1.0000e+0

Kilometers

9.4607e+12

AU

6.3241e+4

Parsecs

3.0660e-1

Information

A light-year is the distance light travels in one Julian year (365.25 days), approximately 9.46 × 10^12 km. 1 parsec ≈ 3.26 ly, 1 AU ≈ 1.496 × 10^8 km.

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