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Light-years to Kilometers Converter (ly to km)

1 ly = 9,460,730,473,000 km. Type any value to convert light-years to kilometers.

1 ly = 9,460,730,473,000 km

Formula: km = ly × 9,460,730,473,000

Common values
Decimals
In every unit 22 units
Nanometer (nm) 9.460730473 × 10²⁴ nm
Micrometer (µm) 9.460730473 × 10²¹ µm
Millimeter (mm) 9.460730473 × 10¹⁸ mm
Centimeter (cm) 9.460730473 × 10¹⁷ cm
Decimeter (dm) 9.460730473 × 10¹⁶ dm
Meter (m) 9.460730473 × 10¹⁵ m
Kilometer (km) 9,460,730,473,000 km
Inch (in) 3.724697036 × 10¹⁷ in
Foot (ft) 3.103914197 × 10¹⁶ ft
Yard (yd) 1.034638066 × 10¹⁶ yd
Mile (mi) 5,878,625,373,000 mi
Nautical mile (nmi) 5,108,385,784,000 nmi
Mil (thou) (mil) 3.724697036 × 10²⁰ mil
Hand (hh) 9.311742591 × 10¹⁶ hh
Fathom (ftm) 5.173190328 × 10¹⁵ ftm
Chain (ch) 470,290,029,900,000 ch
Furlong (fur) 47,029,002,990,000 fur
League (lea) 1,959,541,791,000 lea
Ångström (Å) 9.460730473 × 10²⁵ Å
Astronomical unit (au) 63,241.07708 au
Light-year (ly) 1 ly
Parsec (pc) 0.3066013938 pc

Convert on our server?

If you continue, the file is uploaded over an encrypted connection and converted on our server. You can keep using the site meanwhile. The original is deleted as soon as it is converted; the result is kept for 6 hours so you can download it, and you can delete it at any time. Files are never shared or used for anything else.

Calculated in your browser – nothing you type is sent anywhere. Privacy details

Light-years to kilometers table

Formula: km = ly × 9,460,730,473,000

Light-year (ly)Kilometer (km)
0.1 ly946,073,047,300 km
0.25 ly2,365,182,618,000 km
0.5 ly4,730,365,236,000 km
1 ly9,460,730,473,000 km
2 ly18,921,460,950,000 km
3 ly28,382,191,420,000 km
4 ly37,842,921,890,000 km
5 ly47,303,652,360,000 km
6 ly56,764,382,840,000 km
7 ly66,225,113,310,000 km
8 ly75,685,843,780,000 km
9 ly85,146,574,250,000 km
10 ly94,607,304,730,000 km
12 ly113,528,765,700,000 km
15 ly141,910,957,100,000 km
20 ly189,214,609,500,000 km
25 ly236,518,261,800,000 km
30 ly283,821,914,200,000 km
40 ly378,429,218,900,000 km
50 ly473,036,523,600,000 km
60 ly567,643,828,400,000 km
75 ly709,554,785,400,000 km
100 ly946,073,047,300,000 km
150 ly1.419109571 × 10¹⁵ km
200 ly1.892146095 × 10¹⁵ km
250 ly2.365182618 × 10¹⁵ km
500 ly4.730365236 × 10¹⁵ km
1,000 ly9.460730473 × 10¹⁵ km

How to use: Light-years to Kilometers

  1. 1 Type the value in light-years.
  2. 2 The result in kilometers appears at once – or type in the kilometers field to convert back.
  3. 3 Pick a common value, round to fewer decimals or swap the units with one click.
  4. 4 Copy the result, or open “In every unit” to see the value in all units of length.

About this tool

Light-year (ly) is a unit of length (astronomical); 1 ly = 9.460730473 × 10¹⁵ m. Kilometer (km) is a unit of length (SI); 1 km = 1,000 m.

To convert light-years to kilometers, multiply the value by 9,460,730,473,000 (km = ly × 9,460,730,473,000). Example: 10 ly = 94,607,304,730,000 km.

Calculated in your browser – nothing you type is sent anywhere.

Frequently asked questions

How do I convert light-years to kilometers?

To convert light-years to kilometers, multiply the value by 9,460,730,473,000: km = ly × 9,460,730,473,000. For example 10 ly = 94,607,304,730,000 km.

What is 1 ly in kilometers?

1 ly = 9,460,730,473,000 km. The other way round, 1 km = 1.057000834 × 10⁻¹³ ly.

How exact is the result?

The converter uses the official definitions of both units and shows up to 10 significant digits; choose 0–6 decimals to round. Both units are defined exactly in terms of each other, so the factor itself is exact.

Can I convert other units of length here?

Yes – choose any of the 22 units of length in the From and To lists, or switch to another measurement at the top.

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