Convert Earth's polar radius to foot (US survey)
Please provide values below to convert Earth's polar radius [R_p] to foot (US survey) [ft (US)], or Convert foot (US survey) to Earth's polar radius.
1 R_p = 20855444.8377 ft (US). To convert Earth's polar radius to foot (US survey), multiply the value by 20855444.8377; to go the other way, divide by it (1 ft (US) = 4.79491091072e-08 R_p). Both units measure length and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 R_p = 20855444.8377 ft (US)
- 1 ft (US) = 4.79491091072e-08 R_p
- 10 R_p = 208554448.377 ft (US)
- 100 R_p = 2085544483.77 ft (US)
How to Convert Earth's Polar Radius to Foot (Us Survey)
1 R_p = 20855444.8376668 ft (US)
Example: convert 15 R_p to ft (US):
15 R_p = 15 × 20855444.8376668 ft (US) = 312831672.565001 ft (US)
Earth's Polar Radius to Foot (Us Survey) Conversion Table
| Earth's polar radius | foot (US survey) |
|---|---|
| 1 R_p | 20855444.8377 ft (US) |
| 2 R_p | 41710889.6753 ft (US) |
| 3 R_p | 62566334.513 ft (US) |
| 5 R_p | 104277224.188 ft (US) |
| 10 R_p | 208554448.377 ft (US) |
| 20 R_p | 417108896.753 ft (US) |
| 50 R_p | 1042772241.88 ft (US) |
| 100 R_p | 2085544483.77 ft (US) |
| 500 R_p | 10427722418.8 ft (US) |
| 1000 R_p | 20855444837.7 ft (US) |
Earth's Polar Radius
The Earth's polar radius is the distance from the center of the Earth to the North or South Pole, approximately 6,356.8 kilometers.
History/Origin
The fact that the Earth is an oblate spheroid, flattened at the poles, has been known since the 18th century. Modern measurements are made with high precision.
Current Use
The Earth's polar radius is a key parameter in geodesy and is used to define the Earth's shape and gravitational field.
Foot (Us Survey)
The U.S. survey foot was a unit of length defined as exactly 1200/3937 meters.
History/Origin
The U.S. survey foot was used for land surveying in the United States for most of the 20th century. Its use was officially phased out in 2022 to standardize with the international foot.
Current Use
The U.S. survey foot is now an obsolete unit.
Frequently Asked Questions
What is 1 Earth's polar radius in foot (US survey)?
1 Earth's polar radius (R_p) = 20855444.8377 foot (US survey) (ft (US)).
How do you convert Earth's polar radius to foot (US survey)?
Multiply the Earth's polar radius value by 20855444.8377. For example, 25 R_p × 20855444.8377 = 521386120.942 ft (US).
What is 10 Earth's polar radius in foot (US survey)?
10 R_p = 208554448.377 ft (US).
Which unit is larger, the Earth's polar radius or the foot (US survey)?
The Earth's polar radius is the larger unit: 1 R_p = 20855444.8377 ft (US).