Convert chain (US survey) to a.u. of length Online | Free Length Converter

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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:



  • 1 US survey chain = 66 US survey feet



  • 1 US survey chain ≈ 20.11684 meters



  • 10 US survey chains = 1 furlong



  • 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.


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:



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



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



  • 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.




No conversions available for length.

Convert chain (US survey) to Other Length Units

🔄 chain (US survey) to centimeter
🔄 chain (US survey) to inch
🔄 chain (US survey) to millimeter
🔄 chain (US survey) to kilometer
🔄 chain (US survey) to decimeter
🔄 chain (US survey) to micrometer
🔄 chain (US survey) to nanometer
🔄 chain (US survey) to mile
🔄 chain (US survey) to yard
🔄 chain (US survey) to foot
🔄 chain (US survey) to light year
🔄 chain (US survey) to exameter
🔄 chain (US survey) to petameter
🔄 chain (US survey) to terameter
🔄 chain (US survey) to gigameter
🔄 chain (US survey) to megameter
🔄 chain (US survey) to hectometer
🔄 chain (US survey) to dekameter
🔄 chain (US survey) to micron
🔄 chain (US survey) to picometer
🔄 chain (US survey) to femtometer
🔄 chain (US survey) to attometer
🔄 chain (US survey) to megaparsec
🔄 chain (US survey) to kiloparsec
🔄 chain (US survey) to parsec
🔄 chain (US survey) to astronomical unit
🔄 chain (US survey) to league
🔄 chain (US survey) to nautical league
🔄 chain (US survey) to nautical league (int.)
🔄 chain (US survey) to league (statute)
🔄 chain (US survey) to nautical mile (UK)
🔄 chain (US survey) to nautical mile (international)
🔄 chain (US survey) to mile (statute)
🔄 chain (US survey) to mile (US survey)
🔄 chain (US survey) to mile (Roman)
🔄 chain (US survey) to kiloyard
🔄 chain (US survey) to furlong
🔄 chain (US survey) to furlong (US survey)
🔄 chain (US survey) to chain
🔄 chain (US survey) to rope
🔄 chain (US survey) to rod
🔄 chain (US survey) to rod (US survey)
🔄 chain (US survey) to perch
🔄 chain (US survey) to pole
🔄 chain (US survey) to fathom
🔄 chain (US survey) to fathom (US survey)
🔄 chain (US survey) to ell
🔄 chain (US survey) to foot (US survey)
🔄 chain (US survey) to link
🔄 chain (US survey) to link (US survey)
🔄 chain (US survey) to cubit (UK)
🔄 chain (US survey) to hand
🔄 chain (US survey) to span (cloth)
🔄 chain (US survey) to finger (cloth)
🔄 chain (US survey) to nail (cloth)
🔄 chain (US survey) to inch (US survey)
🔄 chain (US survey) to barleycorn
🔄 chain (US survey) to mil
🔄 chain (US survey) to microinch
🔄 chain (US survey) to angstrom
🔄 chain (US survey) to a.u. of length
🔄 chain (US survey) to X-unit
🔄 chain (US survey) to fermi
🔄 chain (US survey) to arpent
🔄 chain (US survey) to pica
🔄 chain (US survey) to point
🔄 chain (US survey) to twip
🔄 chain (US survey) to aln
🔄 chain (US survey) to famn
🔄 chain (US survey) to caliber
🔄 chain (US survey) to centiinch
🔄 chain (US survey) to ken
🔄 chain (US survey) to Russian archin
🔄 chain (US survey) to Roman actus
🔄 chain (US survey) to vara de tarea
🔄 chain (US survey) to vara conuquera
🔄 chain (US survey) to vara castellana
🔄 chain (US survey) to cubit (Greek)
🔄 chain (US survey) to long reed
🔄 chain (US survey) to reed
🔄 chain (US survey) to long cubit
🔄 chain (US survey) to handbreadth
🔄 chain (US survey) to fingerbreadth
🔄 chain (US survey) to Planck length
🔄 chain (US survey) to Electron radius (classical)
🔄 chain (US survey) to Bohr radius
🔄 chain (US survey) to Earth equatorial radius
🔄 chain (US survey) to Earth polar radius
🔄 chain (US survey) to Earths distance from sun
🔄 chain (US survey) to Suns radius
🔄 chain (US survey) to meter
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