Convert light year to foot (US survey)
Please provide values below to convert light year [ly] to foot (US survey) [ft (US)], or Convert foot (US survey) to light year.
How to Convert Light Year to Foot (Us Survey)
1 ly = 3.1039079892247e+16 ft (US)
Example: convert 15 ly to ft (US):
15 ly = 15 × 3.1039079892247e+16 ft (US) = 4.65586198383706e+17 ft (US)
Light Year to Foot (Us Survey) Conversion Table
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Light Year
A light-year is the distance that light travels in a vacuum in one Julian year.
History/Origin
The concept of the light-year as a unit of distance in astronomy emerged in the mid-19th century. The first recorded use of the term was in a German astronomical publication in 1851.
Current Use
The light-year is used to express distances to stars and other astronomical objects on a galactic and intergalactic scale, especially in popular science and non-specialist contexts.
Foot (Us Survey)
The U.S. survey foot was a unit of length defined as exactly 1200/3937 meters.
History/Origin
The U.S. survey foot was used for land surveying in the United States for most of the 20th century. Its use was officially phased out in 2022 to standardize with the international foot.
Current Use
The U.S. survey foot is now an obsolete unit.