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Light-year to Foot

Convert Light-year to Foot and get the exact value instantly.

About this conversion

To convert Light-year to Foot, multiply the number of Light-year by 3.103914e16.

Length units straddle the metric and imperial systems, so everyday jobs (measuring a room, reading a map, or following a recipe from another country) often need a quick conversion between meters, feet, miles and inches.

Conversion table

Light-year (ly)Foot (ft)
1 ly3.103914e16 ft
2 ly6.207828e16 ft
5 ly1.551957e17 ft
10 ly3.103914e17 ft
100 ly3.103914e18 ft

How to use this converter

  1. Enter your Light-year value

    Type any number into the Light-year field. It starts at 1 so you can read the rate straight away.

  2. Read the Foot result

    The amount in Foot updates as you type, so there is no button to press and nothing to wait for.

  3. Swap or keep exploring

    Use the swap control to flip the direction, or pick a related conversion from the list below.

Frequently asked

How many Foot are in one Light-year?
One Light-year equals 3.103914e16 ft. Enter any amount above to get an exact figure for your own value.
Is this converter accurate?
Yes. It uses the exact international definition of each unit and computes on your device, so the only rounding is for display.
Do you upload the numbers I enter?
No. The Light-year to Foot conversion runs entirely in your browser tab, and nothing you type is sent to a server.
Does it work on my phone?
Yes. It runs in any modern mobile browser and keeps working offline once the page has loaded.

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