What is a furlong (US survey)?

It is a historic US surveying unit of length equal to exactly 660 US survey feet, often used in older land surveys and legal descriptions.

How long is a nautical mile (UK)?

The UK nautical mile was defined as exactly 6,080 feet or 1,853.184 metres, slightly longer than the international nautical mile.

Why convert between furlong and nautical mile (UK)?

Conversion facilitates interpreting and reconciling measurements from historical land and maritime documents, essential for accurate historical research and chart analysis.

Convert Furlong (US survey) to Nautical Mile (UK) Online

Easily convert lengths from furlong (US survey) to nautical mile (UK) with this online unit converter. Useful for historical, surveying, and maritime navigation measurements.

Furlong (US survey) [fur]

Nautical mile (UK) [NM (UK)]

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Furlong (US survey) [fur] to Nautical mile (UK) [NM (UK)] Conversion Table

Furlong (US survey) [fur]	Nautical mile (UK) [NM (UK)]

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.

Furlong (US survey) [fur] to Nautical mile (UK) [NM (UK)] Conversion Table
Furlong (US survey) [fur]	Nautical mile (UK) [NM (UK)]

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What Is This Tool?

This converter transforms lengths measured in furlong (US survey), a historical U.S. surveying unit, into nautical mile (UK), a traditional UK maritime unit. It is designed to support applications involving historical maps, cadastral surveys, and navigation records.

How to Use This Tool?

Enter the length value in furlong (US survey) units
Select the target unit as nautical mile (UK)
Click the convert button to obtain the equivalent length
Review the result, which is based on the defined conversion factor
Use the result to compare or integrate historical measurements with modern units

Key Features

Converts furlong (US survey) lengths to nautical mile (UK) units accurately using established conversion rates
Supports analysis of historical survey and maritime data
Browser-based and easy to use for quick length conversions
Includes examples for practical understanding
Useful for professionals dealing with legacy cadastral and navigation documents

Examples

5 furlongs (US survey) converts to approximately 0.543 nautical miles (UK)
10 furlongs (US survey) converts to roughly 1.086 nautical miles (UK)

Common Use Cases

Interpreting boundaries and distances on older US cadastral surveys
Converting historical maps and legal land descriptions into modern units
Analyzing traditional horse racing distances using customary units
Interpreting UK Admiralty nautical charts and maritime navigation records
Reconciling legacy maritime documents with current measurement standards

Tips & Best Practices

Always verify the historical context of the units involved before conversion
Use this tool to assist in comparing legacy data with modern systems
Consider the slight difference between UK and international nautical miles when precision is required
Cross-check with legal or surveying documents to ensure appropriate application
Apply conversions carefully when restoring or interpreting archival datasets

Limitations

Both furlong (US survey) and nautical mile (UK) are historical units and not standardized internationally today
Slight variations in unit definitions can cause discrepancies in high-precision tasks
Conversion results should be used with caution where exact legal or navigational precision is critical

Frequently Asked Questions

What is a furlong (US survey)?: It is a historic US surveying unit of length equal to exactly 660 US survey feet, often used in older land surveys and legal descriptions.
How long is a nautical mile (UK)?: The UK nautical mile was defined as exactly 6,080 feet or 1,853.184 metres, slightly longer than the international nautical mile.
Why convert between furlong and nautical mile (UK)?: Conversion facilitates interpreting and reconciling measurements from historical land and maritime documents, essential for accurate historical research and chart analysis.

Key Terminology

Furlong (US survey): A historical unit of length equal to 660 US survey feet, used mainly in older U.S. surveying and land descriptions.
Nautical mile (UK): A traditional British maritime unit defined as 6,080 feet or 1,853.184 metres, used historically in UK Admiralty charts and navigation.
Conversion Rate: The exact factor used to convert one unit into another, such as 1 furlong (US survey) equaling approximately 0.1085528487 nautical mile (UK).

Quick Knowledge Check

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

660 International feet

660 US survey feet

6080 UK feet

Which unit is slightly longer: UK nautical mile or international nautical mile?

International nautical mile

UK nautical mile

They are exactly the same

What is a common use for converting furlong to nautical mile (UK)?

Modern surveying only

Interpreting historical maritime and land survey documents

Measuring short athletic race distances

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