Light-years to Kilometers
1 ly ≈ 9.461 × 10¹² km. Edit either value to convert instantly.
Conversion formula
km = ly × (9.4607304725808 × 10¹⁵) × (0.001)1 ly ≈ 9.46073 × 10¹² km
light-year (ly)
A light-year is 9.4607304725808 × 10¹⁵ m: the distance light travels in vacuum in one Julian year of exactly 365.25 days.
Source: International Astronomical Union — Measuring the Universe
kilometer (km)
One kilometer equals exactly 1,000 m.
Source: BIPM SI Brochure, 9th edition — SI prefixes and accepted non-SI units
Conversion table
| ly | km |
|---|---|
| ≈ 9.46073 × 10¹² | |
| ≈ 1.89215 × 10¹³ | |
| ≈ 4.73037 × 10¹³ | |
| ≈ 9.46073 × 10¹³ | |
| ≈ 1.41911 × 10¹⁴ | |
| ≈ 1.89215 × 10¹⁴ | |
| ≈ 2.36518 × 10¹⁴ | |
| ≈ 2.83822 × 10¹⁴ | |
| ≈ 3.78429 × 10¹⁴ | |
| ≈ 4.25733 × 10¹⁴ |
| ly | km |
|---|---|
| ≈ 4.73037 × 10¹⁴ | |
| ≈ 5.67644 × 10¹⁴ | |
| ≈ 6.62251 × 10¹⁴ | |
| ≈ 7.56858 × 10¹⁴ | |
| ≈ 8.51466 × 10¹⁴ | |
| ≈ 9.46073 × 10¹⁴ | |
| ≈ 1.41911 × 10¹⁵ | |
| ≈ 1.51372 × 10¹⁵ | |
| ≈ 1.60832 × 10¹⁵ | |
| ≈ 1.70293 × 10¹⁵ |
Frequently asked questions
How many kilometers are in 1 light-year?
1 ly ≈ 9.461 × 10¹² km. km = ly × (9.4607304725808 × 10¹⁵) × (0.001)
How do I convert ly to km?
km = ly × (9.4607304725808 × 10¹⁵) × (0.001)
Is 1 light-year bigger than 1 kilometer?
1 ly ≈ 9.461 × 10¹² km.
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