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

Long Cubit

The long cubit is an ancient unit of length that is a variation of the standard cubit, measuring from the elbow to the tip of the middle finger. The long cubit is longer than the common cubit, typically about 21 inches (approximately 53 centimeters).

It was used in ancient civilizations such as Egypt and Mesopotamia for construction, land measurement, and crafts, especially when more precision or a larger unit was needed.

Key points:

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  Long cubit ≈ 21 inches (53 cm)

  
  
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  Longer than the standard cubit (usually about 18 inches)

  
  
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  Used in ancient architecture and surveying

  
  
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  Provided a larger base unit for measurements in construction

  
  

The long cubit helped ancient builders and surveyors manage larger scales while still relying on the human body as a reference.

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.