Convert furlong to chain (US survey) Online | Free Length Converter

Furlong

A furlong is a traditional unit of distance used primarily in agriculture and horse racing. It is equal to 220 yards, 660 feet, or 1/8 of a mile (approximately 201.168 meters).

The word "furlong" comes from the Old English words furh (furrow) and lang (long), originally referring to the length of a furrow in a 10-acre field. It was historically used in England to measure field lengths for plowing.

In modern times, the furlong is rarely used outside of horse racing, where race distances are still often given in furlongs, especially in the United Kingdom and the United States.

Conversions:

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  1 furlong = 660 feet

  
  
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  1 furlong = 220 yards

  
  
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  1 furlong ≈ 201.168 meters

  
  
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  8 furlongs = 1 mile

  
  

Although considered outdated for most uses, the furlong remains a culturally significant unit in some specific fields.

Chain (US Survey)

The US survey chain is a unit of length used historically in land surveying in the United States. It is defined as exactly 66 US survey feet, which is slightly longer than the international foot. Since one US survey foot equals about 0.3048006096 meters, the US survey chain is approximately 20.11684 meters long.

Like the standard chain, it is divided into 100 links, each measuring 0.66 US survey feet. The US survey chain was widely used in the Public Land Survey System to measure land parcels and boundaries.

Key facts:

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  1 US survey chain = 66 US survey feet

  
  
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  1 US survey chain ≈ 20.11684 meters

  
  
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  10 US survey chains = 1 furlong

  
  
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  80 US survey chains = 1 US survey mile

  
  

Though the US survey foot and chain are being phased out in favor of international units, the US survey chain still appears in historical land records and some legal contexts.