What is a Roman actus?

The Roman actus is an ancient Roman unit of length equal to 120 Roman feet, approximately 35.5 metres, used mainly in Roman land surveying.

What does the US survey chain measure?

The US survey chain is a traditional unit of length equal to 66 US survey feet, roughly 20.1168 metres, historically used in US land surveying.

Why convert Roman actus to chain (US survey)?

Converting Roman actus to chain (US survey) helps translate old Roman land measurements into units familiar in modern US cadastral and mapping contexts.

How to Convert from Roman actus to Chain (US survey) [ch]

Convert length measurements from the ancient Roman actus unit to the US survey chain (ch) using this easy-to-use online converter designed for historical and cadastral surveying contexts.

Roman actus

Chain (US survey) [ch]

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Roman actus to Chain (US survey) [ch] Conversion Table

Roman actus	Chain (US survey) [ch]

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.

Roman actus to Chain (US survey) [ch] Conversion Table
Roman actus	Chain (US survey) [ch]

Explore More Length Units Converter

What Is This Tool?

This tool allows you to convert length measurements from the Roman actus, an ancient Roman unit, to the US survey chain (ch), a traditional unit used in American land surveying. It supports understanding and translating historical land measurements into modern surveying contexts.

How to Use This Tool?

Enter the length value you wish to convert in Roman actus
Select Roman actus as the unit to convert from
Choose chain (US survey) [ch] as the unit to convert to
Click the convert button to get the equivalent length in chains
Use the output for your historical land surveying or GIS tasks

Key Features

Converts Roman actus values to chain (US survey) units instantly
Supports historical and cadastral surveying applications
Browser-based and easy to use without installation
Ideal for archaeology, history, and GIS related projects
Provides clear examples for accurate conversion understanding

Examples

2 Roman actus equals approximately 3.5273 chains (US survey)
5 Roman actus equals approximately 8.8182 chains (US survey)

Common Use Cases

Translating ancient Roman land measurements for modern cadastral surveys
Interpreting distances in historical Roman road and property records
Converting legacy survey data in US historical land deeds and plats
Analyzing rural property boundaries using traditional measurement units
Supporting archaeological and historical GIS applications involving legacy units

Tips & Best Practices

Ensure consistent use of units when converting historical measurements
Use the tool for academic, archaeological, or surveying research
Cross-check conversions when analyzing legal land descriptions
Remember the approximate nature of ancient units in your analyses
Understand the difference between US survey foot and international foot

Limitations

The Roman actus is an approximate ancient measurement with regional variations
US survey chain is based on the US survey foot which differs slightly from the international foot
The conversion is primarily for historical or academic use, not modern everyday needs

Frequently Asked Questions

What is a Roman actus?: The Roman actus is an ancient Roman unit of length equal to 120 Roman feet, approximately 35.5 metres, used mainly in Roman land surveying.
What does the US survey chain measure?: The US survey chain is a traditional unit of length equal to 66 US survey feet, roughly 20.1168 metres, historically used in US land surveying.
Why convert Roman actus to chain (US survey)?: Converting Roman actus to chain (US survey) helps translate old Roman land measurements into units familiar in modern US cadastral and mapping contexts.

Key Terminology

Roman actus: An ancient Roman unit of length equal to 120 Roman feet, about 35.5 metres, used in land surveying and defining land areas.
Chain (US survey) [ch]: A traditional US unit of length equal to 66 US survey feet, historically used in cadastral surveying and subdivided into 100 links.
Cadastral surveying: The method of surveying and mapping land boundaries for ownership and legal documentation.

Quick Knowledge Check

What is the approximate length of one Roman actus?

120 US feet

Approximately 35.5 metres

66 US survey feet

What is one US survey chain equal to?

120 Roman feet

66 US survey feet

Approximately 35.5 metres

Why is converting Roman actus to chain (US survey) useful?

For cooking measurements

To interpret historical land data

For international shipping

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