What is the length of one chain (US survey)?

One chain (US survey) equals 66 US survey feet or approximately 20.1168 meters.

How many fathoms (US survey) are in one chain (US survey)?

There are 11 fathoms (US survey) in one chain (US survey).

Where is the fathom (US survey) unit typically used?

The fathom (US survey) is mainly used in nautical and hydrographic measurements such as water depths and line lengths.

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

Convert lengths between the US survey chain and the US survey fathom units with this easy tool for historical and nautical measurements.

Chain (US survey) [ch]

Fathom (US survey) [fath]

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

Chain (US survey) [ch] to Fathom (US survey) [fath] Conversion Table

Chain (US survey) [ch]	Fathom (US survey) [fath]

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 Fathom (US survey) [fath] Conversion Table
Chain (US survey) [ch]	Fathom (US survey) [fath]

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What Is This Tool?

This tool enables conversion between chain (US survey) and fathom (US survey), units historically used in land and hydrographic measurements across the United States.

How to Use This Tool?

Enter the length value in chain (US survey) units
Select chain (US survey) as the input unit
Select fathom (US survey) as the output unit
Click convert to get the equivalent length in fathom (US survey)

Key Features

Converts length units from chain (US survey) to fathom (US survey) accurately
Supports mapping, surveying, and maritime measurement conversions
Browser-based and user-friendly interface
Facilitates understanding of historical and legacy US survey units

Examples

Convert 2 chain (US survey) to fathom (US survey) to get 22 fathom
Convert 0.5 chain (US survey) to fathom (US survey) to get 5.5 fathom

Common Use Cases

Translating historical land measurement data into nautical or hydrographic lengths
Reconciling legacy survey measurements for GIS and mapping applications
Recording water depths and anchor cable lengths in maritime operations
Interpreting and converting cadastral survey distances in property boundary descriptions

Tips & Best Practices

Ensure you select the correct US survey units for both input and output
Use this converter to harmonize legacy survey records with modern measurements
Be aware of slight differences between US survey and international units
Double-check converted values when applying them to legal or navigational contexts

Limitations

The conversion applies only to historical US survey units, not modern international units
Minor discrepancies may occur due to differences between US survey and international standards
Accuracy depends on knowledge of context and the legacy unit definitions used

Frequently Asked Questions

What is the length of one chain (US survey)?: One chain (US survey) equals 66 US survey feet or approximately 20.1168 meters.
How many fathoms (US survey) are in one chain (US survey)?: There are 11 fathoms (US survey) in one chain (US survey).
Where is the fathom (US survey) unit typically used?: The fathom (US survey) is mainly used in nautical and hydrographic measurements such as water depths and line lengths.

Key Terminology

Chain (US survey): A traditional length unit equivalent to 66 US survey feet used historically in land surveying.
Fathom (US survey): A length unit equal to 6 US survey feet, used in nautical and hydrographic measurements.
US Survey Foot: A unit of length used in the US survey system, slightly different from the international foot.

Quick Knowledge Check

How many feet make up one chain (US survey)?

60 feet

66 feet

72 feet

What is the conversion rate from chain to fathom (US survey)?

1 chain = 10 fathoms

1 chain = 11 fathoms

1 chain = 12 fathoms

In which context is the fathom (US survey) most often used?

Land cadastral surveys

Nautical and hydrographic measurements

Architectural design

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