What is Earth's equatorial radius?

It is the straight-line distance from Earth's center to the equator measured along the equatorial plane, standardized as approximately 6,378.137 kilometers in the WGS84 reference ellipsoid.

A long reed is a traditional, now obsolete, unit of length that was historically used for land measurement and surveying, varying by locality and period.

Why convert Earth's equatorial radius to long reed?

Users convert to interpret historical land deeds, old maps, and legacy surveying data that use the long reed for distances.

How to Convert from Earth's Equatorial Radius to Long Reed

Easily convert lengths from Earth's equatorial radius to long reed with this online converter, useful for geodesy, surveying, and historical measurement interpretations.

Earth's equatorial radius

Long reed

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Earth's equatorial radius to Long reed Conversion Table

Earth's equatorial radius	Long reed

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.

Earth's equatorial radius to Long reed Conversion Table
Earth's equatorial radius	Long reed

Explore More Length Units Converter

What Is This Tool?

This online converter transforms measurements from Earth's equatorial radius, a modern geodetic unit, to the long reed, a traditional and obsolete unit of length historically used for land measurement and surveying.

How to Use This Tool?

Enter the value measured in Earth's equatorial radius you want to convert.
Select Earth's equatorial radius as the input unit and long reed as the output unit.
Click the convert button to see the equivalent length in long reed.
Review conversion results and use them for historical surveying or research purposes.

Key Features

Supports conversion between Earth's equatorial radius and long reed units.
Provides values helpful for interpreting historical land deeds and old maps.
Browser-based tool requiring no installation and easy to use.
Includes examples demonstrating common conversions.
Useful for applications in geodesy, cartography, aerospace engineering, and property restoration.

Examples

1 Earth's equatorial radius equals approximately 1,992,925.88 long reed.
0.5 Earth's equatorial radius converts to about 996,462.94 long reed.

Common Use Cases

Translating modern geodetic measurements into traditional units for historical land surveying.
Interpreting distances on old maps and parish records for research.
Restoring property boundaries using legacy land measurement data.
Supporting aerospace engineering calculations involving Earth measurements.
Studying historical regional measurement systems and standards.

Tips & Best Practices

Verify local historical definitions of the long reed for more accurate conversions.
Use this conversion primarily for interpretive and historical analysis rather than precise scientific work.
Cross-reference converted values with legacy documents when restoring property boundaries.
Apply the tool within its scope, understanding the long reed varies by location and time period.

Limitations

The long reed’s value varies regionally and historically, so conversions are approximate.
Earth's equatorial radius is a precise modern measure, unlike the non-standardized long reed.
Conversions may lack precision for scientific or engineering applications needing exact measurements.

Frequently Asked Questions

What is Earth's equatorial radius?: It is the straight-line distance from Earth's center to the equator measured along the equatorial plane, standardized as approximately 6,378.137 kilometers in the WGS84 reference ellipsoid.
What is a long reed?: A long reed is a traditional, now obsolete, unit of length that was historically used for land measurement and surveying, varying by locality and period.
Why convert Earth's equatorial radius to long reed?: Users convert to interpret historical land deeds, old maps, and legacy surveying data that use the long reed for distances.

Key Terminology

Earth's Equatorial Radius: The distance from Earth's center to the equator along the equatorial plane, standardized at approximately 6,378.137 kilometers.
Long Reed: A traditional, obsolete unit of length historically used for land measurement, which varies in exact size depending on locality and era.
WGS84 Reference Ellipsoid: A geodetic standard model defining Earth's shape and size, used to measure Earth's equatorial radius accurately.

Quick Knowledge Check

Which unit represents a modern, precise geodetic measurement?

Long reed

Earth's equatorial radius

Parish record

What is a key limitation when converting to long reed?

The long reed value varies by region

Earth's equatorial radius is obsolete

Long reed is standard globally

What is a common use case for converting to long reed?

Calculating satellite orbits

Restoring historical property boundaries

Performing modern engineering designs

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