What is a chain in surveying?

A chain is a traditional imperial surveying length equal to 66 feet or 100 links, commonly used in historical land measurement.

Why convert chains to millimeters?

Converting chains to millimeters allows integration of historical measurements into modern standardized metric systems used in engineering and mapping.

Is the conversion precise?

While the conversion uses an exact rate, original chain measurements may lack the precision of millimeter scale, so tolerance should be considered.

How to Convert from Chain [ch] to Millimeter [mm]

Use this online length unit converter to transform values from chains to millimeters with ease. Perfect for surveying, engineering, and historic land measurement conversions.

Chain [ch]

Millimeter [mm]

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

Chain [ch] to Millimeter [mm] Conversion Table

Chain [ch]	Millimeter [mm]

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 [ch] to Millimeter [mm] Conversion Table
Chain [ch]	Millimeter [mm]

Explore More Length Units Converter

What Is This Tool?

This converter allows users to change lengths measured in chains, a traditional imperial surveying unit, into millimeters, the SI derived unit suitable for precise metric measurements.

How to Use This Tool?

Enter the length value in chains you wish to convert.
Select 'chain [ch]' as the input unit and 'millimeter [mm]' as the output unit.
Click the convert button to get the result in millimeters.

Key Features

Converts length values from chain to millimeter quickly and accurately.
Supports conversion of traditional surveying units to modern metric units.
Browser-based and easy to use without installation.

Examples

2 Chains = 2 × 20116.8 mm = 40233.6 mm
0.5 Chain = 0.5 × 20116.8 mm = 10058.4 mm

Common Use Cases

Interpreting historical land survey records and property deeds.
Converting legacy engineering and survey measurements to metric for GIS applications.
Translating old cadastral survey data into standardized modern units.
Supporting civil engineering, construction, and precision manufacturing where mixed units occur.

Tips & Best Practices

Ensure correct unit selection before converting to avoid errors.
Keep in mind the original accuracy of chains when interpreting converted millimeter values.
Apply suitable tolerances when using converted measurements in precision work.
Use the tool for verifying legacy data in modern metric formats.

Limitations

Chain is an imperial unit primarily used historically and regionally.
Converting to millimeters may present rounding differences due to unit precision.
Millimeter precision can exceed the original measurement accuracy of chains, requiring attention to tolerances.

Frequently Asked Questions

What is a chain in surveying?: A chain is a traditional imperial surveying length equal to 66 feet or 100 links, commonly used in historical land measurement.
Why convert chains to millimeters?: Converting chains to millimeters allows integration of historical measurements into modern standardized metric systems used in engineering and mapping.
Is the conversion precise?: While the conversion uses an exact rate, original chain measurements may lack the precision of millimeter scale, so tolerance should be considered.

Key Terminology

Chain [ch]: A traditional surveying unit of length equal to 66 feet, commonly used in land measurement and divided into 100 links.
Millimeter [mm]: An SI derived unit of length equal to one thousandth of a meter, used for precise measurement at a sub-centimeter scale.

Quick Knowledge Check

What does one chain equal in millimeters?

66 millimeters

20116.8 millimeters

10000 millimeters

Which field commonly used chains historically?

Cadastral surveying

Digital photography

Software development

What is a millimeter best used for?

Large land measurement

Precise small dimension specification

Measuring time intervals

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