What is the US survey fathom used for?

It is a length unit used in hydrographic and nautical contexts, mainly for measuring water depths and line lengths.

Why convert fathoms to perch?

To relate maritime measurements to land surveying units, especially when dealing with old surveying or property boundary records.

Is the perch still used today?

The perch is largely obsolete and mainly appears in older legal and cadastral documents.

How to Convert from Fathom (US survey) [fath] to Perch

Easily convert length measurements from fathom (US survey) to perch using this straightforward unit converter designed for historical and nautical surveying contexts.

Fathom (US survey) [fath]

Perch

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

Fathom (US survey) [fath] to Perch Conversion Table

Fathom (US survey) [fath]	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.

Fathom (US survey) [fath] to Perch Conversion Table
Fathom (US survey) [fath]	Perch

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What Is This Tool?

This converter transforms length values from the US survey fathom (fath), a unit used primarily in nautical and hydrographic measurements, into the perch, an older land surveying unit. It helps bridge the gap between maritime and land measurement systems, especially useful for interpreting legacy data.

How to Use This Tool?

Enter the length value in fathoms (US survey)
Select fathom (US survey) as the input unit if not preselected
Choose perch as the output unit
View the converted value instantly

Key Features

Converts fathom (US survey) to perch with an exact conversion factor
Supports units historically used in maritime and land surveying
Ideal for working with old nautical charts, property deeds, and survey records
Simple interface for quick and accurate conversions

Examples

Convert 5 fathoms (US survey): 5 × 0.3636370909 = approximately 1.818 perch
Convert 10 fathoms (US survey): 10 × 0.3636370909 = approximately 3.636 perch

Common Use Cases

Translating nautical depth measurements to land survey units for comparison
Interpreting dimensions from old maritime or hydrographic surveys
Converting legacy survey data using US survey units to units used in cadastral records
Reading and understanding historical property boundaries and estate plans

Tips & Best Practices

Ensure you understand whether your source data uses US survey or international units
Use this converter primarily for historical or archival measurement data
Cross-check converted values when working with legal or cadastral documents
Be mindful of small discrepancies due to differences between US survey and international measurement systems

Limitations

Units involved are historical and non-SI, potentially affecting data precision
Differences between US survey and international or metric units might cause minor inconsistencies
Perch is mostly obsolete and relevant only for historical record interpretation
Not suitable for precise modern measurement needs

Frequently Asked Questions

What is the US survey fathom used for?: It is a length unit used in hydrographic and nautical contexts, mainly for measuring water depths and line lengths.
Why convert fathoms to perch?: To relate maritime measurements to land surveying units, especially when dealing with old surveying or property boundary records.
Is the perch still used today?: The perch is largely obsolete and mainly appears in older legal and cadastral documents.

Key Terminology

Fathom (US survey): A non-SI unit of length equal to 6 US survey feet, used mostly in nautical and hydrographic measurements.
Perch: A historical unit of length equal to 16.5 feet, primarily used in surveying and land measurement.
Conversion Rate: The exact ratio used to convert one unit of measurement into another; here, 1 fathom (US survey) equals 0.3636370909 perch.

Quick Knowledge Check

What is the US survey fathom primarily used to measure?

Land boundaries

Water depths and line lengths

Building heights

Which unit is equivalent to approximately 5.0292 metres?

Perch

Fathom (US survey)

International foot

Why might someone convert fathoms to perch?

To interpret maritime measurements in land surveying context

To convert modern metric units

To measure building interiors

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