📐 Light Years to Feet Converter

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1 light year =
3.10391 × 10¹⁶ feet
1 foot =
3.22174 × 10⁻¹⁷ light years
Formula
ft = ly × 3.10391 × 10¹⁶
Handy values
5 ly = 1.55196 × 10¹⁷ ft · 10 ly = 3.10391 × 10¹⁷ ft · 100 ly = 3.10391 × 10¹⁸ ft

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⚡ Light Years to Feet: the quick answer

1 ly = 3.10391 × 10¹⁶ ft 1 light year equals 3.10391 × 10¹⁶ feet

To convert light years to feet, multiply the value by 3.10391 × 10¹⁶. To go the other way, multiply feet by 3.22174 × 10⁻¹⁷ to get light years.

↔ Convert feet to light years instead

🧮 Formula

Light Years to Feet
ft = ly × 3.10391 × 10¹⁶
Feet to Light Years
ly = ft × 3.22174 × 10⁻¹⁷

Where

  • ly = the length in light years
  • ft = the length in feet
Every unit here is defined by its length in meters, so the conversion factor is (meters per light year) ÷ (meters per foot).

📊 Light Years to Feet conversion table

Light Years (ly)Feet (ft)
1 ly3.10391 × 10¹⁶ ft
2 ly6.20783 × 10¹⁶ ft
3 ly9.31174 × 10¹⁶ ft
4 ly1.24157 × 10¹⁷ ft
5 ly1.55196 × 10¹⁷ ft
6 ly1.86235 × 10¹⁷ ft
7 ly2.17274 × 10¹⁷ ft
8 ly2.48313 × 10¹⁷ ft
9 ly2.79352 × 10¹⁷ ft
10 ly3.10391 × 10¹⁷ ft
12 ly3.7247 × 10¹⁷ ft
14 ly4.34548 × 10¹⁷ ft
15 ly4.65587 × 10¹⁷ ft
20 ly6.20783 × 10¹⁷ ft
21 ly6.51822 × 10¹⁷ ft
24 ly7.44939 × 10¹⁷ ft
25 ly7.75979 × 10¹⁷ ft
30 ly9.31174 × 10¹⁷ ft
40 ly1.24157 × 10¹⁸ ft
50 ly1.55196 × 10¹⁸ ft
60 ly1.86235 × 10¹⁸ ft
75 ly2.32794 × 10¹⁸ ft
80 ly2.48313 × 10¹⁸ ft
100 ly3.10391 × 10¹⁸ ft
200 ly6.20783 × 10¹⁸ ft
250 ly7.75979 × 10¹⁸ ft
300 ly9.31174 × 10¹⁸ ft
400 ly1.24157 × 10¹⁹ ft
500 ly1.55196 × 10¹⁹ ft
750 ly2.32794 × 10¹⁹ ft
1,000 ly3.10391 × 10¹⁹ ft

✏️ Worked examples

Convert 25 light years to feet

25 ly × 3.10391 × 10¹⁶ = 7.75979 × 10¹⁷ ft

Try this example →

Convert 250 light years to feet

250 ly × 3.10391 × 10¹⁶ = 7.75979 × 10¹⁸ ft

Try this example →

📘 About these units

Light year (ly). A light year is the distance light travels in one year, about 9.46 trillion kilometers.

Foot (ft). The foot equals exactly 0.3048 meters, or 12 inches, and is widely used for height and room sizes in India, the US and the UK.

❓ Frequently asked questions

How many feet are in one light year?

There are 3.10391 × 10¹⁶ feet in one light year.

How do I convert light years to feet?

Multiply the number of light years by 3.10391 × 10¹⁶. For example, 10 light years equal 3.10391 × 10¹⁷ feet.

How many light years are in one foot?

One foot equals 3.22174 × 10⁻¹⁷ light years.

How many feet is 12 light years?

3.7247 × 10¹⁷ feet. Other common values: 5 light years = 1.55196 × 10¹⁷ feet and 100 light years = 3.10391 × 10¹⁸ feet.

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