Convert rod to X-unit Online | Free Length Converter

Rod

A rod is a traditional unit of length used in land measurement and surveying. It is equal to 16.5 feet, 5.5 yards, or exactly 5.0292 meters.

Also known as a pole or perch, the rod dates back to medieval England and was commonly used for measuring land and agricultural plots. It is closely related to other units such as the chain (which is 4 rods) and the furlong (which is 40 rods).

Key conversions:

• 
  

  1 rod = 16.5 feet

  
  
• 
  

  1 rod = 5.5 yards

  
  
• 
  

  1 rod = 5.0292 meters

  
  
• 
  

  4 rods = 1 chain

  
  
• 
  

  40 rods = 1 furlong

  
  

Though largely replaced by metric units today, the rod is still occasionally used in surveying and legal descriptions of land, especially in the United States and the UK.

X-unit

The X-unit (symbol: xu) is a very small unit of length used primarily to measure wavelengths of X-rays and gamma rays. It was introduced in the early 20th century for precision measurements in X-ray crystallography.

• 
  

  1 X-unit ≈ 0.1 picometers (pm) or 10⁻¹³ meters

  
  
• 
  

  It allows scientists to express extremely small wavelengths typical of X-rays, which are on the order of atomic spacing

  
  
• 
  

  The exact definition has varied historically, but the unit remains useful for comparing wavelengths in X-ray spectroscopy and crystallography

  
  

Though largely replaced by the picometer or ångström in modern usage, the X-unit played a crucial role in early developments of atomic-scale measurement.