Convert Earth's Polar Radius (R⊕ (p)) to Chain (US Survey) (ch (US)) instantly.
Earth's Polar Radius to Chain (US Survey) conversion
1 Earth's Polar Radius (R⊕ (p)) = 315992.82 Chain (US Survey) (ch (US)). To convert Earth's Polar Radius to Chain (US Survey), multiply the value by 315992.82.
| Earth's Polar Radius (R⊕ (p)) | Chain (US Survey) (ch (US)) |
|---|---|
| 1 | 315992.82 |
| 2 | 631985.63 |
| 5 | 1579964.1 |
| 10 | 3159928.2 |
| 25 | 7899820.4 |
| 50 | 15799641 |
| 100 | 31599282 |
| 1000 | 315992820 |
Frequently asked questions
How many Chain (US Survey) are in one Earth's Polar Radius?
One Earth's Polar Radius (R⊕ (p)) equals 315992.82 Chain (US Survey) (ch (US)).
How do I convert Earth's Polar Radius to Chain (US Survey)?
To convert Earth's Polar Radius to Chain (US Survey), multiply the value by 315992.82.
What is 10 Earth's Polar Radius in Chain (US Survey)?
10 Earth's Polar Radius = 3159928.2 Chain (US Survey).
About these units
Earth's Polar Radius (R⊕ (p))
The Earth's polar radius is approximately 6,356.8 km, slightly shorter than the equatorial radius due to the Earth's flattening at the poles. This measurement is critical in modeling Earth's shape, gravity field, and rotation. It impacts satellite orbits, geodetic surveys, and global positioning systems (GPS). The difference between the equatorial and polar radii also explains phenomena such as centrifugal force variations, equatorial bulges, and sea level differences across latitudes. Understanding R⊕ (p) is essential for precision navigation, Earth science, and astronomy.
Chain (US Survey) (ch (US))
The US Survey Chain is defined as 66 US Survey Feet (~20.1168 meters), aligning with the historic Gunter's chain but adapted to the US survey foot. It is used primarily in cadastral surveys, property delineation, and historical land records. Surveyors employ the chain for practical measurements of fields, lots, and infrastructure layouts. The unit's subdivision into 100 links simplifies area calculation, as 10 square chains equal one acre, maintaining continuity with older surveying systems. Even today, engineers and surveyors working with legacy data encounter the US survey chain in historical deeds, maps, and legal descriptions. Its precision ensures consistency when reconciling pre-modern measurements with modern coordinates.