What is a length converter?

A length converter helps you convert between different units of length quickly and accurately.

How do I convert Earth polar radius to foot (US survey)?

Simply enter the value in the Earth polar radius input field, and the converter will show you the equivalent value in foot (US survey) instantly.

Is this length converter free to use?

Yes, this length converter is completely free and easy to use for all your conversion needs.

Can I switch between Earth polar radius and foot (US survey) easily?

Yes, there is a switch button provided to quickly swap the conversion direction between Earth polar radius and foot (US survey).

How accurate are the conversion results?

The conversion results are calculated using precise formulas to ensure accuracy for most practical purposes.

Convert Earth polar radius to foot (US survey) Online

Convert Earth polar radius to foot (US survey) Online | Free Length Converter

Earth Polar Radius

The Earth's polar radius is the distance from the center of the Earth to the North or South Pole. It measures the Earth’s radius along its rotational axis.

Its value is approximately 6,356.8 kilometers (about 3,949.9 miles).
The Earth is an oblate spheroid, so the polar radius is slightly shorter than the equatorial radius due to the planet's flattening at the poles.
This measurement is crucial for geodesy, understanding Earth’s shape, and satellite navigation.

Key facts:

Polar radius ≈ 6,356.8 km
Smaller than equatorial radius by about 21.3 km
Important for precise Earth modeling and mapping

The difference between the polar and equatorial radius reflects the Earth’s rotation and its effect on the planet’s shape.

Foot (US Survey)

The US survey foot is a unit of length used historically in the United States for land surveying and mapping. It is defined as exactly 1200/3937 meters, which is approximately 0.3048006096 meters. This makes it very slightly longer than the international foot, which is exactly 0.3048 meters.

The US survey foot was established to maintain consistency with earlier land surveys and legal descriptions in the U.S. It was used extensively in the Public Land Survey System and other cadastral surveys.

Key points:

1 US survey foot = 1200/3937 meters ≈ 0.3048006096 meters
Slightly longer than the international foot by about 0.0006 millimeters
Used primarily in land surveying and legal documents
As of recent years, the US has been phasing out the US survey foot in favor of the international foot for standardization.

Though nearly identical to the international foot, the US survey foot remains important for understanding older land records and measurements.

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From:		Earth polar radius
To:		foot (US survey)

Convert Earth polar radius to foot (US survey) Online | Free Length Converter

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