Feet to Light Years Converter
Convert feet (ft) to light years (ly)
Result
3.2217385 × 10⁻¹⁷ ly
Light Years
1 ft = 3.2217385 × 10⁻¹⁷ ly
1 ft in other units
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How to convert feet to light years
There are 3.103914 × 10¹⁶ feet in one light year, so divide the number of feet by 3.103914 × 10¹⁶.
ly = ft ÷ 3.103914 × 10¹⁶
1 ft = 3.221739 × 10⁻¹⁷ ly · 1 ly = 3.103914 × 10¹⁶ ft
Worked example
To convert 5 feet to light years: 5 ft ÷ 3.103914 × 10¹⁶ = 1.610869 × 10⁻¹⁶ ly.
About feet (ft)
A foot is 12 inches, exactly 30.48 cm. Height and room dimensions are often given in feet, including in India.
About light years (ly)
A light year is the distance light travels in one Julian year, about 9.46 trillion km. It is used for distances between stars.
More conversions
Feet to other units
Frequently asked questions
How many light years are in one foot?
One foot equals 3.221739 × 10⁻¹⁷ light years.
How many feet are in one light year?
One light year equals 3.103914 × 10¹⁶ feet.
How do I convert feet to light years?
Use the formula ly = ft ÷ 3.103914 × 10¹⁶. For example, 5 ft ÷ 3.103914 × 10¹⁶ = 1.610869 × 10⁻¹⁶ ly.