Convert Foot to Light Year
Enter the number of feet that you want to convert to light years.
How to Convert Feet to Light Years
The foot and light year are both units of length. By definition, 1 light year equals exactly 3.1040026247e16 feet. This means to convert feet to light years, you divide by 3.1040026247e16.
Formula
Step-by-Step Example
Convert 5 ft to light years:
We need to convert feet to light years
Since 1 ly = 3.1040026247e16 ft, divide by 3.1040026247e16
5 ÷ 3.1040026247e16 = 1.6108233802e-16
5 ft = 1.6108233802e-16 ly
Foot to Light Year Conversion Table
Quick reference table for common foot to light year conversions. Click any value for detailed calculation.
| Feet (ft) | Light Years (ly) |
|---|---|
| 0.1 ft | 3.2216467604e-18 ly |
| 0.5 ft | 1.6108233802e-17 ly |
| 1 ft | 3.2216467604e-17 ly |
| 2 ft | 6.4432935208e-17 ly |
| 5 ft | 1.6108233802e-16 ly |
| 10 ft | 3.2216467604e-16 ly |
| 25 ft | 8.054116901e-16 ly |
| 50 ft | 1.6108233802e-15 ly |
| 100 ft | 3.2216467604e-15 ly |
About These Units
Foot (ft)
A foot (ft) is an imperial unit equal to 12 inches or 30.48 centimeters exactly. Feet measure human height, room dimensions, building heights, and elevation in the US. One foot equals 0.3048 meters. Aviation altitude is measured in feet worldwide.
Light Year (ly)
A light year (ly) is the distance light travels in one year: approximately 9.461 trillion kilometers or 5.879 trillion miles. Light years measure interstellar distances. The nearest star Proxima Centauri is 4.24 light years away. Light travels 299,792 km/second.
Frequently Asked Questions
How do I convert feet to light years?
To convert feet to light years, divide the value by 3.1040026247e16. For example, 10 ft = 3.2216467604e-16 ly.
How many light years are in 1 foot?
1 foot equals 3.2216467604e-17 light years.
What is the formula for feet to light years?
The formula is: ly = ft ÷ 3.1040026247e16.