Light Years to Feet Converter
Convert light years (ly) to feet (ft)
Result
3.1039142 × 10¹⁶ ft
Feet
1 ly = 3.1039142 × 10¹⁶ ft
1 ly in other units
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How to convert light years to feet
One light year equals 3.103914 × 10¹⁶ feet, so multiply the number of light years by 3.103914 × 10¹⁶.
ft = ly × 3.103914 × 10¹⁶
1 ly = 3.103914 × 10¹⁶ ft · 1 ft = 3.221739 × 10⁻¹⁷ ly
Worked example
To convert 5 light years to feet: 5 ly × 3.103914 × 10¹⁶ = 1.551957 × 10¹⁷ ft.
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.
About feet (ft)
A foot is 12 inches, exactly 30.48 cm. Height and room dimensions are often given in feet, including in India.
More conversions
Light Years to other units
Frequently asked questions
How many feet are in one light year?
One light year equals 3.103914 × 10¹⁶ feet.
How many light years are in one foot?
One foot equals 3.221739 × 10⁻¹⁷ light years.
How do I convert light years to feet?
Use the formula ft = ly × 3.103914 × 10¹⁶. For example, 5 ly × 3.103914 × 10¹⁶ = 1.551957 × 10¹⁷ ft.