How to convert feet (US survey) to light years
1 foot (us survey) is equal to 3.221744986 × 10⁻¹⁷ light years, and 1 light year is equal to 3.103907989 × 10¹⁶ feet (US survey). To convert, multiply by the conversion factor:
light years = feet (US survey) × 3.221744986 × 10⁻¹⁷
light years = feet (US survey) ÷ 3.103907989 × 10¹⁶Example: convert 1 ft (US) to ly: 1 × 3.221744986 × 10⁻¹⁷ = 3.221744986 × 10⁻¹⁷ ly.
Foot (US Survey) to Light Year conversion table
| Foot (US Survey) (ft (US)) | Light Year (ly) |
|---|---|
| 0.01 ft (US) | 3.221744986 × 10⁻¹⁹ ly |
| 0.1 ft (US) | 3.221744986 × 10⁻¹⁸ ly |
| 1 ft (US) | 3.221744986 × 10⁻¹⁷ ly |
| 2 ft (US) | 6.443489971 × 10⁻¹⁷ ly |
| 3 ft (US) | 9.665234957 × 10⁻¹⁷ ly |
| 5 ft (US) | 1.610872493 × 10⁻¹⁶ ly |
| 10 ft (US) | 3.221744986 × 10⁻¹⁶ ly |
| 20 ft (US) | 6.443489971 × 10⁻¹⁶ ly |
| 50 ft (US) | 1.610872493 × 10⁻¹⁵ ly |
| 100 ft (US) | 3.221744986 × 10⁻¹⁵ ly |
| 250 ft (US) | 8.054362464 × 10⁻¹⁵ ly |
| 500 ft (US) | 1.610872493 × 10⁻¹⁴ ly |
| 1,000 ft (US) | 3.221744986 × 10⁻¹⁴ ly |
About the foot (us survey)
The US survey foot is exactly 1200/3937 m (about 0.3048006 m), two parts per million longer than the international foot. It was officially retired at the end of 2022 but remains in older land records and state plane coordinates.
Symbol: ft (US) · 1 ft (US) = 0.3048006096 m · Category: US survey units
About the light year
A light-year is the distance light travels in a vacuum in one Julian year (365.25 days): about 9.46 trillion km. The nearest star system, Alpha Centauri, is about 4.37 light-years away.
Symbol: ly · 1 ly = 9.460730473 × 10¹⁵ m · Category: Astronomical