Ken is a traditional Japanese length unit equal to about 1.818 meters, often used in architecture for spacing pillars or room dimensions.

What is a perch used for?

A perch is a historical unit of length, about 5.0292 meters, primarily used in surveying and land measurement contexts.

How do I convert ken to perch?

Multiply the value in ken by 0.4212121212 to get the equivalent length in perch.

How to Convert from Ken to Perch?

Convert traditional Japanese length units from ken to perch using this simple online converter. Ideal for architectural, historical, and land measurement contexts.

Ken

Perch

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Ken to Perch Conversion Table

Ken	Perch

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.

Ken to Perch Conversion Table
Ken	Perch

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What Is This Tool?

This online tool converts length measurements from ken, a traditional Japanese unit, to perch, a historical unit used in land surveying. It helps translate dimensions across different cultural and historical measurement systems.

How to Use This Tool?

Enter the length value in ken into the input field
Select ken as the original unit and perch as the target unit
Click the convert button to see the result
Review the converted length displayed in perch
Use the output to assist with historical or architectural research

Key Features

Converts ken to perch with a fixed conversion rate
Includes explanations relevant to traditional architecture and land surveying
Easy-to-use interface for quick unit translation
Browser-based tool accessible from any device
Supports interpretation of historical and architectural records

Examples

Convert 5 ken to perch to get 2.10606 perch
Convert 10 ken to perch to obtain 4.21212 perch
Use the conversion formula: 1 ken equals 0.4212121212 perch

Common Use Cases

Interpreting bay widths in traditional Japanese buildings
Translating old property boundary descriptions measured in perch
Comparing room or tatami dimensions in ken with land measurements
Restoring or documenting historical estates using both units
Converting measurements in carpentry and historical architectural plans

Tips & Best Practices

Always verify which unit standard is used regionally for ken measurements
Cross-check conversions when working with historical documents for accuracy
Use this tool alongside modern metric references when possible
Be aware of the historical context as perch is mostly obsolete today
Consult architectural or surveying records to understand unit usage

Limitations

Ken units may vary slightly depending on regional or historical standards
Perch is an outdated measurement not commonly used in modern settings
Conversion precision may be affected by rounding in old records
Modern measurements generally prefer meters or feet over these units

Frequently Asked Questions

What is a ken unit?: Ken is a traditional Japanese length unit equal to about 1.818 meters, often used in architecture for spacing pillars or room dimensions.
What is a perch used for?: A perch is a historical unit of length, about 5.0292 meters, primarily used in surveying and land measurement contexts.
How do I convert ken to perch?: Multiply the value in ken by 0.4212121212 to get the equivalent length in perch.

Key Terminology

Ken: A traditional Japanese length unit equal to about 1.818 meters, used in architecture to specify measurements such as bay widths.
Perch: A historic unit of length equal to 16.5 feet or about 5.0292 meters, commonly used in land surveying and property measurements.

Quick Knowledge Check

What does one ken approximately equal in perch?

0.3 perch

0.42 perch

1 perch

In which field is the ken unit primarily used?

Historical surveying

Traditional Japanese architecture

Modern construction

Why is the perch unit less common today?

It is an outdated, mostly obsolete measurement

It is too small for practical use

It was never used in land measurement

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