What is a furlong (US survey)?

It is a historical unit of length used in US land surveys, equal to 660 US survey feet or exactly 792000/3937 metres.

What does Earth's polar radius represent?

It is the distance from Earth's center to the mean geographic pole, serving as the semi-minor axis in geodetic reference ellipsoids.

Why convert furlongs to Earth's polar radius?

To relate traditional US survey lengths to modern geodetic measurements used in GPS, mapping, and satellite studies.

Convert Furlong (US survey) to Earth's Polar Radius Online

Easily convert historical US survey furlong measurements to Earth's polar radius units used in geodesy and mapping, with accurate conversion factors and examples.

Furlong (US survey) [fur]

Earth's polar radius

Please check your input. It must be a valid numeric value.

Furlong (US survey) [fur] to Earth's polar radius Conversion Table

Furlong (US survey) [fur]	Earth's polar radius

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Furlong (US survey) [fur] to Earth's polar radius Conversion Table
Furlong (US survey) [fur]	Earth's polar radius

Explore More Length Units Converter

What Is This Tool?

This converter transforms length measurements from the historical US survey furlong into Earth's polar radius units. It supports interpreting older land survey data within modern geodetic and GPS frameworks.

How to Use This Tool?

Enter the length value in furlongs (US survey) you wish to convert
Select Earth's polar radius as the target unit
Click the convert button to see the equivalent measurement
Review example results to verify your conversion
Use the output for geodetic or mapping purposes

Key Features

Converts furlong (US survey), a traditional land surveying unit, into Earth's polar radius
Includes precise conversion factor based on geodetic definitions
Supports applications in mapping, GPS, and satellite orbit modeling
Provides example calculations for quick reference
Browser-based and easy to use without installation

Examples

10 furlongs (US survey) = 0.000316463 Earth's polar radius
50 furlongs (US survey) = 0.001582315 Earth's polar radius

Common Use Cases

Analyzing historical US cadastral survey measurements alongside modern geospatial data
Converting distances in legal land boundaries from traditional surveys to geodetic units
Integrating legacy survey data to GPS and mapping applications
Modeling satellite orbits using Earth-scale radius measurements
Supporting Earth shape studies with coordinate transformation

Tips & Best Practices

Confirm the original measurement uses the US survey furlong definition to ensure accurate conversion
Use the tool to bridge historic land records with modern reference ellipsoid parameters
Be mindful that the Earth's polar radius is an average geodetic value and local radius may vary
Double-check conversions when used in critical surveying or geodetic calculations
Use examples as a guide to cross-verify conversion accuracy

Limitations

The furlong (US survey) is a historical and non-SI unit which may yield varying precision
Earth's polar radius is an average value; precise locations may differ due to Earth shape variations
Conversion primarily applies to integrating historic survey data with Earth-scale geodetic frameworks
Local differences in ellipsoid models can influence exact results
Not intended for general length conversions outside geodesy or mapping contexts

Frequently Asked Questions

What is a furlong (US survey)?: It is a historical unit of length used in US land surveys, equal to 660 US survey feet or exactly 792000/3937 metres.
What does Earth's polar radius represent?: It is the distance from Earth's center to the mean geographic pole, serving as the semi-minor axis in geodetic reference ellipsoids.
Why convert furlongs to Earth's polar radius?: To relate traditional US survey lengths to modern geodetic measurements used in GPS, mapping, and satellite studies.

Key Terminology

Furlong (US survey): A historic unit of length used in US surveying equal to 660 survey feet or approximately 201.1684 meters.
Earth's polar radius: The distance from Earth's center to the geographic pole, representing the semi-minor axis in geodetic ellipsoid models.
Conversion factor: The multiplier used to convert one unit of measurement into another; here it is 0.0000316463 for furlongs to Earth's polar radius.

Quick Knowledge Check

What unit does the tool convert from?

Earth's polar radius

Furlong (US survey)

US survey mile

What is Earth's polar radius used to define?

The semi-major axis of Earth's ellipsoid

The semi-minor axis of a reference ellipsoid

The equatorial circumference of Earth

Which use case applies to this conversion?

Converting modern sport race distances

Interpreting historical land survey measurements

Translating nautical miles into meters

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