What is a chain (US survey) unit?

The US survey chain is a traditional length unit equal to 66 US survey feet, historically used for land surveying and divided into 100 links.

How long is a mile in meters?

The international mile is defined as exactly 1,609.344 meters.

Why convert from chain (US survey) to miles?

Converting helps interpret historic survey data and supports mapping and legal descriptions in terms more commonly used today.

How to Convert from Chain (US survey) [ch] to Mile [mi, mi(Int)]?

Learn how to convert length measurements from the US survey chain unit to the international mile unit. Perfect for interpreting historical land surveys and modern mapping.

Chain (US survey) [ch]

Mile [mi, mi(Int)]

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

Chain (US survey) [ch] to Mile [mi, mi(Int)] Conversion Table

Chain (US survey) [ch]	Mile [mi, mi(Int)]

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.

Chain (US survey) [ch] to Mile [mi, mi(Int)] Conversion Table
Chain (US survey) [ch]	Mile [mi, mi(Int)]

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What Is This Tool?

This unit converter helps transform lengths measured in the US survey chain, a traditional land surveying unit, into miles, the widely recognized unit used for land distances and navigation.

How to Use This Tool?

Enter the value measured in chain (US survey) units.
Select the target unit as mile [mi, mi(Int)].
Click convert to view the equivalent distance in miles.

Key Features

Converts chain (US survey) measurements to miles accurately using established conversion rates.
Supports understanding of historical survey data by translating it into modern units.
Useful for land surveying, cadastral mapping, GIS, and transportation planning.

Examples

10 chains (US survey) equals 0.12500025 miles.
40 chains (US survey) converts to approximately 0.500001 miles.

Common Use Cases

Translating historical US land measurement data for accurate legal property descriptions.
Converting legacy survey results to miles for mapping and GIS applications.
Integrating traditional measurement units with modern land surveying and transportation systems.

Tips & Best Practices

Verify whether original measurements use the US survey foot or international foot for best accuracy.
Use this converter for land surveys, real estate analysis, and road distance conversions.
Cross-reference converted values with original data for consistency in historical records.

Limitations

Minor discrepancies can arise because the US survey foot differs slightly from the international foot.
Accuracy depends on recognizing which foot standard was applied in the initial measurement.

Frequently Asked Questions

What is a chain (US survey) unit?: The US survey chain is a traditional length unit equal to 66 US survey feet, historically used for land surveying and divided into 100 links.
How long is a mile in meters?: The international mile is defined as exactly 1,609.344 meters.
Why convert from chain (US survey) to miles?: Converting helps interpret historic survey data and supports mapping and legal descriptions in terms more commonly used today.

Key Terminology

Chain (US survey): A traditional unit of length equal to 66 US survey feet, used in historical U.S. land surveying.
Mile (mi, mi(Int)): An English unit of length defined as exactly 1,609.344 meters, commonly used for land distance measurement.
US survey foot: A unit of length differing slightly from the international foot, used in U.S. land surveying and measurements.

Quick Knowledge Check

What traditional surveying length equals 66 US survey feet?

Mile

Chain

Link

How many meters are in an international mile?

1500 meters

1609.344 meters

2000 meters

Why is it important to know which foot definition was used in original measurements?

It affects legal ownership

It impacts conversion accuracy

It changes the unit name

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