Convert inch (US survey) to Earth's polar radius
Enter a value below to convert inch (US survey) [in (US)] to Earth's polar radius [R_p]. Reverse conversion: Convert Earth's polar radius to inch (US survey).
1 in (US) = 3.99575909226e-09 R_p. To convert inch (US survey) to Earth's polar radius, multiply the value by 3.99575909226e-09; to go the other way, divide by it (1 R_p = 250265338.052 in (US)). Both units measure length and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Inch (Us Survey) to Earth's Polar Radius: Quick Reference
- 1 in (US) = 3.99575909226e-09 R_p
- 1 R_p = 250265338.052 in (US)
- 10 in (US) = 3.99575909226e-08 R_p
- 100 in (US) = 3.99575909226e-07 R_p
How to Convert Inch (Us Survey) to Earth's Polar Radius
1 in (US) = 3.99575909226477e-09 R_p
Example: convert 15 in (US) to R_p:
15 in (US) = 15 × 3.99575909226477e-09 R_p = 5.99363863839716e-08 R_p
Inch (Us Survey) to Earth's Polar Radius Conversion Table
| inch (US survey) | Earth's polar radius |
|---|---|
| 1 in (US) | 3.99575909226e-09 R_p |
| 2 in (US) | 7.99151818453e-09 R_p |
| 3 in (US) | 1.19872772768e-08 R_p |
| 5 in (US) | 1.99787954613e-08 R_p |
| 10 in (US) | 3.99575909226e-08 R_p |
| 20 in (US) | 7.99151818453e-08 R_p |
| 50 in (US) | 1.99787954613e-07 R_p |
| 100 in (US) | 3.99575909226e-07 R_p |
| 500 in (US) | 1.99787954613e-06 R_p |
| 1000 in (US) | 3.99575909226e-06 R_p |
Inch (Us Survey): Definition and Use
The U.S. survey inch is a unit of length equal to 1/12 of a U.S. survey foot.
History/Origin
The U.S. survey inch is based on the U.S. survey foot, which was defined such that 1 meter is exactly 39.37 inches. The use of survey units was officially phased out in 2022.
Current Use
The U.S. survey inch was used for land surveying in the United States.
Earth's Polar Radius: Definition and Use
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.
Inch (Us Survey) to Earth's Polar Radius: Frequently Asked Questions
What is 1 inch (US survey) in Earth's polar radius?
1 inch (US survey) (in (US)) = 3.99575909226e-09 Earth's polar radius (R_p).
How do you convert inch (US survey) to Earth's polar radius?
Multiply the inch (US survey) value by 3.99575909226e-09. For example, 25 in (US) × 3.99575909226e-09 = 9.98939773066e-08 R_p.
What is 10 inch (US survey) in Earth's polar radius?
10 in (US) = 3.99575909226e-08 R_p.
Which unit is larger, the inch (US survey) or the Earth's polar radius?
The Earth's polar radius is the larger unit: 1 in (US) equals only 3.99575909226e-09 R_p.