ConvertNavi

Light-year to Kilometer (ly → km)

Convert light-year to kilometer instantly. The conversion factor below is exact by international definition.

Realtime·length·astronomical
Exact
ly
× 9,460,730,472,580.8
km
9,460,730,472,580.8
Precision [auto]
6

📐ly to km formulaExact

km = ly × 9.460730e+12
Inverse: ly = km × 1.057001e-13

Worked example: 1 ly = 9.460730e+12 km

ℹ️About these units

Light-year (ly)
Source: IAU: 1 ly = 365.25 d × c (exact).
Kilometer (km)
Road distances in most countries.

📊Reference table: ly → km

Light-year (ly)Kilometer (km)
19,460,730,472,580.8
218,921,460,945,161.6
547,303,652,362,904
1094,607,304,725,808
15141,910,957,088,712
20189,214,609,451,616
25236,518,261,814,520
50473,036,523,629,040
100946,073,047,258,080
2502,365,182,618,145,200
5004,730,365,236,290,400
7507,095,547,854,435,600
1,0009,460,730,472,580,800

Want a downloadable CSV? Append ?format=csv to the API /api/v1/table endpoint.

🔁Reverse & related

Reverse: km → lyly → mly → dmly → cmly → mmly → μmly → nmly → inly → ft

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