Convert a.u. of length to Russian archin Online | Free Length Converter

Astronomical Unit (a.u.) of Length

The astronomical unit (a.u.) is a unit of length used primarily in astronomy to describe distances within our solar system. It is defined as the average distance between the Earth and the Sun.

Key facts:

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  1 astronomical unit ≈ 149,597,870.7 kilometers (about 93 million miles)

  
  
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  Used to measure distances between planets and other objects in the solar system

  
  
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  Provides a convenient scale for expressing space distances that are too large for kilometers but too small for light-years

  
  

The astronomical unit helps astronomers communicate and calculate orbits, planetary positions, and space missions with clarity and precision.

Russian Archin

The archin (also spelled arshin) is a traditional Russian unit of length that was widely used before the adoption of the metric system. It is approximately equal to 28 inches or 0.7112 meters.

The archin was commonly used in measuring cloth, land, and building dimensions in Russia and neighboring regions. It roughly corresponds to the length of a forearm from the elbow to the tip of the middle finger, similar to the cubit.

Though obsolete today, the archin remains an important part of Russian historical measurements and appears in older legal and trade documents.

Summary:

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  1 archin ≈ 28 inches (0.7112 meters)

  
  
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  Used historically in Russia for textiles and land measurement

  
  
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  Based on the length of the forearm

  
  
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  Mostly of historical and cultural interest today