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Convert Light-year to Kilometer

1 light-year = 9,460,730,500,000 kilometers (ly to km).

The light-year (ly) and the kilometer (km) both measure length. A light-year is larger than a kilometer — one light-year contains 9,460,730,000,000 kilometers. Going the other way, one kilometer is 1.057e-13 light-years. The converter above does this in real time, and the reference chart lists the values that come up most often.

9,460,730,500,000

1 ly = 9,460,730,500,000 km

How to convert Light-years to Kilometers

Multiply the light-year value by 9,460,730,000,000 to get kilometers.

Example: 10 light-years = 94,607,300,000,000 kilometers.

Light-year to Kilometer Conversion Chart

Light-yearsKilometers
1 ly9,460,730,500,000 km
2 ly18,921,461,000,000 km
3 ly28,382,191,000,000 km
5 ly47,303,652,000,000 km
10 ly94,607,305,000,000 km
20 ly189,214,610,000,000 km
25 ly236,518,260,000,000 km
50 ly473,036,520,000,000 km
100 ly946,073,050,000,000 km
1000 ly9.4607305e+15 km

Frequently Asked Questions

How many kilometers are in a light-year?
There are 9,460,730,500,000 kilometers in 1 light-year.
How do you convert light-years to kilometers?
Multiply the light-year value by 9,460,730,000,000 to get kilometers.
What is 5 light-years in kilometers?
5 light-years equals 47,303,652,000,000 kilometers.
What is 100 light-years in kilometers?
100 light-years equals 946,073,050,000,000 kilometers.
What is 1 kilometer in light-years?
1 kilometer equals 1.0570008e-13 light-years.
Is this light-year to kilometer converter free?
Yes. The converter is free, needs no sign-up, and runs entirely in your browser — the values you enter never leave your device.

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