What is a link (US survey)?

It is a historic unit of length equal to 1/100 of a Gunter's chain or 0.66 US survey feet, used primarily in land surveying in the United States.

What does Earth's polar radius represent?

Earth's polar radius measures the distance from the Earth's center to the geographic pole along the rotation axis, serving as the semi-minor axis of the reference ellipsoid.

Why convert from link (US survey) to Earth's polar radius?

To relate old land survey measurements to global geodetic models and enable integration with modern GPS and mapping systems.

How to Convert from Link (US survey) [li] to Earth's Polar Radius

Convert lengths from the historic US survey link unit to Earth's polar radius, enabling integration of old land survey records with modern geodetic reference systems.

Link (US survey) [li]

Earth's polar radius

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

Link (US survey) [li] to Earth's polar radius Conversion Table

Link (US survey) [li]	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.

Link (US survey) [li] to Earth's polar radius Conversion Table
Link (US survey) [li]	Earth's polar radius

Explore More Length Units Converter

What Is This Tool?

This converter allows users to translate length measurements from the US survey link, a historic land surveying unit, to Earth's polar radius, a geodetic constant used in global mapping and navigation. It supports combining legacy cadastral data with modern geodetic references.

How to Use This Tool?

Enter the value in link (US survey) units that you wish to convert
Select 'link (US survey) [li]' as the input unit
Choose 'Earth's polar radius' as the output unit
Click convert to obtain the equivalent length expressed in Earth's polar radius
Use the result to integrate historic land measurements with geodetic models

Key Features

Converts from US survey link, a small unit historically used in U.S. land surveying
Outputs measurements in Earth's polar radius, crucial for geodetic and GPS applications
Provides conversion based on established geodetic constants like WGS84 ellipsoid
Supports reconciliation of historic survey data with current mapping systems
Ideal for civil engineering, cadastral mapping, and satellite orbit studies

Examples

10 links (US survey) convert to approximately 3.1646289e-7 of Earth's polar radius
100 links (US survey) equal about 3.1646289e-6 of Earth's polar radius

Common Use Cases

Interpreting distances from historical US land survey plats and property deeds
Integrating legacy cadastral records into modern GPS and mapping frameworks
Civil engineering projects requiring reconciliation between old and new measurements
Geodetic calculations for defining ellipsoid parameters and coordinate transformations
Satellite orbit modeling and Earth shape analysis using geodetic constants

Tips & Best Practices

Verify units carefully when working with legacy survey data
Handle very small converted values with precision to avoid errors
Consider the reference ellipsoid definition when interpreting Earth's polar radius
Use conversions primarily for historic or cadastral research purposes
Combine this tool with modern GPS data for enhanced mapping accuracy

Limitations

The link (US survey) is a historic unit no longer actively used
Earth's polar radius depends on the chosen geodetic reference like WGS84
Converted values are extremely small and may require careful numerical handling

Frequently Asked Questions

What is a link (US survey)?: It is a historic unit of length equal to 1/100 of a Gunter's chain or 0.66 US survey feet, used primarily in land surveying in the United States.
What does Earth's polar radius represent?: Earth's polar radius measures the distance from the Earth's center to the geographic pole along the rotation axis, serving as the semi-minor axis of the reference ellipsoid.
Why convert from link (US survey) to Earth's polar radius?: To relate old land survey measurements to global geodetic models and enable integration with modern GPS and mapping systems.

Key Terminology

Link (US survey): A historic land-survey length equal to 1/100 of a Gunter's chain or 0.66 US survey feet, used in cadastral and land boundary measurements.
Earth's Polar Radius: The semi-minor axis of the reference ellipsoid representing the distance from Earth's center to the mean geographic pole.
WGS84: A widely adopted geodetic reference ellipsoid defining standardized Earth parameters for GPS and mapping.

Quick Knowledge Check

What is one link (US survey) equal to in terms of feet?

0.66 US survey feet

1 US foot

66 US feet

Earth's polar radius corresponds to which part of the Earth?

Distance from center to equator

Distance from center to geographic pole

Distance around the equator

Why are link to Earth's polar radius conversions so small?

Because the link is much larger

Because Earth's polar radius is a very large geodetic constant

Conversion formulas reduce unit size

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