Earth's Polar Radius to Foot Converter
Unit Converter
Instant · Precise · Universal
32 units available
6 categories total
How to Convert Earth's Polar Radius to Foot
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)) = 20855486.55 Foot (ft).
Earth's Polar Radius to Foot — Common Values
| Earth's Polar Radius (R⊕ (polar)) | Foot (ft) |
|---|---|
| 0.1 | 2085548.655 |
| 0.5 | 10427743.27 |
| 1 | 20855486.55 |
| 2 | 41710973.1 |
| 5 | 104277432.7 |
| 10 | 208554865.5 |
| 25 | 521387163.7 |
| 50 | 1042774327 |
| 100 | 2085548655 |
| 500 | 10427743270 |
| 1000 | 20855486550 |
About Earth's Polar Radius (R⊕ (polar))
Definition
The Earth's polar radius is the distance from Earth's center to either pole, approximately 6,356.752 km.
Mathematical Relationship
R⊕(polar) = 6,356,752.3 m. It is about 21.385 km shorter than the equatorial radius.
Conversion Formula
To convert Earth polar radii to meters: multiply by 6,356,752.3.
Practical Applications
Geodetic calculations, gravity modeling, and precise cartography near the poles.
Interesting Facts
At the poles, you are about 21 km closer to Earth's center than at the equator — you weigh very slightly more!
Common Mistakes
Approximating Earth as a perfect sphere — the difference between equatorial and polar radii matters for precision applications.
Educational Tips
Earth's shape (oblate spheroid) is like a slightly squished ball — wider at the equator, flatter at the poles.
About Foot (ft)
Definition
The foot is a unit of length equal to 12 inches or exactly 0.3048 meters.
Mathematical Relationship
1 ft = 12 in = 0.3048 m = 1/3 yd = 30.48 cm.
Conversion Formula
To convert feet to meters: multiply by 0.3048. To convert meters to feet: multiply by 3.28084.
Practical Applications
Building plans, ceiling heights, personal height, pool depth, altitude in aviation, and real estate listings.
Interesting Facts
The international foot (0.3048 m exactly) differs slightly from the US survey foot (1200/3937 m), which was deprecated in 2023.
Common Mistakes
Confusing the foot with 30 cm (it's 30.48 cm). Also, forgetting that 5′10″ is not 5.10 feet — it's 5 feet 10 inches = 5.833 feet.
Educational Tips
There are 3 feet in a yard and 5,280 feet in a mile. A 6-foot person is about 1.83 meters tall.