Convert Earth equatorial radius to chain (US survey) Online | Free Length Converter

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Earth Equatorial Radius


The Earth's equatorial radius is the distance from the center of the Earth to the equator. It represents the Earth's radius measured along the equatorial plane.



  • Its value is approximately 6,378.1 kilometers (about 3,963.2 miles).



  • The Earth is not a perfect sphere but an oblate spheroid, so the equatorial radius is slightly larger than the polar radius.



  • This radius is important for geodesy, satellite orbits, and mapping.



Key facts:



  • Equatorial radius ≈ 6,378.1 km



  • Larger than polar radius due to Earth's flattening at the poles



  • Used in Earth sciences, navigation, and space missions



Understanding the Earth's equatorial radius helps in accurate modeling of the planet’s shape and gravitational field.


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.



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Convert Earth equatorial radius to Other Length Units

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