Convert Earth's polar radius to chain (US survey)
Please provide values below to convert Earth's polar radius [R_p] to chain (US survey) [ch (US)], or Convert chain (US survey) to Earth's polar radius.
1 R_p = 315991.588448 ch (US). To convert Earth's polar radius to chain (US survey), multiply the value by 315991.588448; to go the other way, divide by it (1 ch (US) = 3.16464120109e-06 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 = 315991.588448 ch (US)
- 1 ch (US) = 3.16464120109e-06 R_p
- 10 R_p = 3159915.88448 ch (US)
- 100 R_p = 31599158.8448 ch (US)
How to Convert Earth's Polar Radius to Chain (Us Survey)
1 R_p = 315991.588447926 ch (US)
Example: convert 15 R_p to ch (US):
15 R_p = 15 × 315991.588447926 ch (US) = 4739873.82671888 ch (US)
Earth's Polar Radius to Chain (Us Survey) Conversion Table
| Earth's polar radius | chain (US survey) |
|---|---|
| 1 R_p | 315991.588448 ch (US) |
| 2 R_p | 631983.176896 ch (US) |
| 3 R_p | 947974.765344 ch (US) |
| 5 R_p | 1579957.94224 ch (US) |
| 10 R_p | 3159915.88448 ch (US) |
| 20 R_p | 6319831.76896 ch (US) |
| 50 R_p | 15799579.4224 ch (US) |
| 100 R_p | 31599158.8448 ch (US) |
| 500 R_p | 157995794.224 ch (US) |
| 1000 R_p | 315991588.448 ch (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.
Chain (Us Survey)
A U.S. survey chain is a unit of length equal to 66 U.S. survey feet.
History/Origin
The U.S. survey chain is based on the U.S. survey foot, which was slightly different from the international foot. The use of survey units was officially phased out in 2022.
Current Use
The U.S. survey chain was used for land surveying in the United States.
Frequently Asked Questions
What is 1 Earth's polar radius in chain (US survey)?
1 Earth's polar radius (R_p) = 315991.588448 chain (US survey) (ch (US)).
How do you convert Earth's polar radius to chain (US survey)?
Multiply the Earth's polar radius value by 315991.588448. For example, 25 R_p × 315991.588448 = 7899789.7112 ch (US).
What is 10 Earth's polar radius in chain (US survey)?
10 R_p = 3159915.88448 ch (US).
Which unit is larger, the Earth's polar radius or the chain (US survey)?
The Earth's polar radius is the larger unit: 1 R_p = 315991.588448 ch (US).