Instant · Precise · Universal
32 units available
6 categories total
For example, 1 Petameter (Pm) = 157313035.5 Earth's Polar Radius (R⊕ (polar)).
| Petameter (Pm) | Earth's Polar Radius (R⊕ (polar)) |
|---|---|
| 0.1 | 15731303.55 |
| 0.5 | 78656517.73 |
| 1 | 157313035.5 |
| 2 | 314626070.9 |
| 5 | 786565177.3 |
| 10 | 1573130355 |
| 25 | 3932825887 |
| 50 | 7865651773 |
| 100 | 15731303550 |
| 500 | 78656517730 |
| 1000 | 157313035500 |
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.



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