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Convert Furlong to Light Year (fur to ly) instantly with accurate, readable results.
Use our Length Unit Converter to quickly convert between meters, kilometers, feet, inches, miles, and more. This powerful unit conversion tool supports both metric and imperial systems, making it ideal for travel, engineering, education, and everyday use. Whether you're calculating distances or comparing measurements, our length unit conversion calculator ensures fast and accurate results every time.
Furlong (fur) - traditional length unit
Furlong is an Imperial/US customary unit historically used in surveying and still common in horse racing. Used as one-eighth of a mile and equal to ten chains.
- Symbol: fur (also seen as f)
- System: Imperial/US customary
- Exact relations: 1 fur = 220 yd = 660 ft = 10 chains = 40 rods = 1/8 mi
- Metric equivalents: 1 fur = 201.168 m = 0.201168 km (exact)
- Typical examples: flat horse races (e.g., 5f, 6f, 7f); historical field/survey lengths
Light-year (ly) - astronomical distance
Light-year is an astronomical distance equal to the distance light travels in vacuum in one Julian year. Used for interstellar and intergalactic scales; based on c = 299,792,458 m/s and a Julian year of 365.25 days (31,557,600 s)
- Symbol: ly
- System: Astronomical (non-SI, accepted for use with SI)
- Defined relation: 1 ly = c × 31,557,600 s = 9.4607304725808×10^15 m ≈ 9.4607×10^12 km
- Other relations: 1 ly ≈ 63,241.077 AU; 1 ly ≈ 0.306601 pc; 1 pc ≈ 3.26156 ly
- Typical examples: Proxima Centauri ~4.2465 ly; Milky Way diameter ~1.0×10^5 ly; Andromeda Galaxy ~2.5×10^6 ly