circumference of earth at equator - Wolfram|Alpha

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Input interpretation

Earth | equatorial circumference

Result

24901.461 miles

Unit conversion

40075.017 km (kilometers)

4.0075017×10^7 meters

21638.778 nmi (nautical miles)

0.13367587 light seconds

Comparison as length

≈ 0.8 × length of American railroad track laid as of 1860 ( ≈ 30000 mi )

≈ 1.9 × length of the Great Wall of China ( 21196.2 km )

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