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.
1 ly = 3.1039e+16 ft (US). To convert light year to foot (US survey), multiply the value by 3.1039e+16; to go the other way, divide by it (1 ft (US) = 3.2217e-17 ly). Both units measure length and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 ly = 3.1039e+16 ft (US)
- 1 ft (US) = 3.2217e-17 ly
- 10 ly = 3.1039e+17 ft (US)
- 100 ly = 3.1039e+18 ft (US)
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
| light year | foot (US survey) |
|---|---|
| 1 ly | 3.1039e+16 ft (US) |
| 2 ly | 6.2078e+16 ft (US) |
| 3 ly | 9.3117e+16 ft (US) |
| 5 ly | 1.5520e+17 ft (US) |
| 10 ly | 3.1039e+17 ft (US) |
| 20 ly | 6.2078e+17 ft (US) |
| 50 ly | 1.5520e+18 ft (US) |
| 100 ly | 3.1039e+18 ft (US) |
| 500 ly | 1.5520e+19 ft (US) |
| 1000 ly | 3.1039e+19 ft (US) |
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.
Frequently Asked Questions
What is 1 light year in foot (US survey)?
1 light year (ly) = 3.1039e+16 foot (US survey) (ft (US)).
How do you convert light year to foot (US survey)?
Multiply the light year value by 3.1039e+16. For example, 25 ly × 3.1039e+16 = 7.7598e+17 ft (US).
What is 10 light year in foot (US survey)?
10 ly = 3.1039e+17 ft (US).
Which unit is larger, the light year or the foot (US survey)?
The light year is the larger unit: 1 ly = 3.1039e+16 ft (US).