Physical constant

Mean radius of the Earth

R⊕
Measured
astronomical

Mean radius of the Earth (R⊕) is 6,371,008.8 m. A mean; the Earth is an oblate spheroid, wider at the equator than pole to pole. Values follow CODATA 2018 (2019 SI redefinition).

Value

Value6,371,008.8 m

Scientific notation6.3710088 × 10^6 m

Unitm

SymbolR⊕

ExactnessExperimentally measuredA mean; the Earth is an oblate spheroid, wider at the equator than pole to pole.

Reciprocal1.569610138 × 10^-7

Order of magnitude10^6

Multiples

× 21.27420176 × 10^7

× 106.3710088 × 10^7

× 1006.3710088 × 10^8

× 1,0006.3710088 × 10^9

× 0.53.1855044 × 10^6

× 0.16.3710088 × 10^5

Provenance

DatasetCODATA 2018 (2019 SI redefinition)

Categoryastronomical

Why it mattersA mean; the Earth is an oblate spheroid, wider at the equator than pole to pole.

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Mean radius of the Earth

Value

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