Earth's Polar Radius to Megameter
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How to Convert Earth's Polar Radius to Megameter
To convert Earth polar radii to meters: multiply by 6,356,752.3.
R⊕(polar) = 6,356,752.3 m. It is about 21.385 km shorter than the equatorial radius.
For example, 1 Earth's Polar Radius (R⊕ (polar)) = 6.3567523 Megameter (Mm).
Earth's Polar Radius to Megameter — Common Values
| Earth's Polar Radius (R⊕ (polar)) | Megameter (Mm) |
|---|---|
| 0.1 | 0.63567523 |
| 0.5 | 3.17837615 |
| 1 | 6.3567523 |
| 2 | 12.7135046 |
| 5 | 31.7837615 |
| 10 | 63.567523 |
| 25 | 158.9188075 |
| 50 | 317.837615 |
| 100 | 635.67523 |
| 500 | 3178.37615 |
| 1000 | 6356.7523 |
About Earth's Polar Radius (R⊕ (polar))
The Earth's polar radius is the distance from Earth's center to either pole, approximately 6,356.752 km.
R⊕(polar) = 6,356,752.3 m. It is about 21.385 km shorter than the equatorial radius.
To convert Earth polar radii to meters: multiply by 6,356,752.3.
Geodetic calculations, gravity modeling, and precise cartography near the poles.
At the poles, you are about 21 km closer to Earth's center than at the equator — you weigh very slightly more!
Approximating Earth as a perfect sphere — the difference between equatorial and polar radii matters for precision applications.
Earth's shape (oblate spheroid) is like a slightly squished ball — wider at the equator, flatter at the poles.
