Convert Chain (US Survey) (ch (US)) to Earth's Polar Radius (R⊕ (p)) instantly.
Chain (US Survey) to Earth's Polar Radius conversion
1 Chain (US Survey) (ch (US)) = 0.0000031646289 Earth's Polar Radius (R⊕ (p)). To convert Chain (US Survey) to Earth's Polar Radius, multiply the value by 0.0000031646289.
| Chain (US Survey) (ch (US)) | Earth's Polar Radius (R⊕ (p)) |
|---|---|
| 1 | 0.0000031646289 |
| 2 | 0.0000063292578 |
| 5 | 0.000015823145 |
| 10 | 0.000031646289 |
| 25 | 0.000079115723 |
| 50 | 0.00015823145 |
| 100 | 0.00031646289 |
| 1000 | 0.0031646289 |
Frequently asked questions
How many Earth's Polar Radius are in one Chain (US Survey)?
One Chain (US Survey) (ch (US)) equals 0.0000031646289 Earth's Polar Radius (R⊕ (p)).
How do I convert Chain (US Survey) to Earth's Polar Radius?
To convert Chain (US Survey) to Earth's Polar Radius, multiply the value by 0.0000031646289.
What is 10 Chain (US Survey) in Earth's Polar Radius?
10 Chain (US Survey) = 0.000031646289 Earth's Polar Radius.
About these units
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.
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.