What is a nautical mile (UK) and how is it defined?

The UK nautical mile, also historically called the Admiralty nautical mile, is defined as exactly 6,080 feet or 1,853.184 metres. It is slightly longer than the international nautical mile.

What is a mil and where is it used?

A mil, also known as a thou, is a unit of length equal to one thousandth of an inch (0.001 in), used commonly in U.S. manufacturing and engineering for specifying small thicknesses and tolerances.

Why would someone convert from UK nautical miles to mils?

Converting from UK nautical miles to mils is useful when precise, very small-scale measurements are needed from historical maritime distances for engineering or manufacturing applications.

Convert Nautical Mile (UK) [NM (UK)] to Mil [mil, thou] Online

Easily convert length from the UK nautical mile (NM (UK)) to mil (mil, thou) with our precise and user-friendly online unit converter tool.

Nautical mile (UK) [NM (UK)]

Mil [mil, thou]

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Nautical mile (UK) [NM (UK)] to Mil [mil, thou] Conversion Table

Nautical mile (UK) [NM (UK)]	Mil [mil, thou]

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.

Nautical mile (UK) [NM (UK)] to Mil [mil, thou] Conversion Table
Nautical mile (UK) [NM (UK)]	Mil [mil, thou]

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What Is This Tool?

This online converter helps you change measurements from the UK nautical mile (NM (UK)), historically known as the Admiralty nautical mile, into mils (also called thou), a small length unit used especially in engineering and manufacturing.

How to Use This Tool?

Enter the value in nautical mile (UK) [NM (UK)] you want to convert
Select mil [mil, thou] as the target unit
Click the convert button to see the equivalent length in mils
Review the result for your measurements or calculations

Key Features

Converts legacy maritime distance units to small-scale length units
Supports UK nautical mile defined as exactly 6,080 feet or 1,853.184 metres
Handles conversions to mil, equal to one thousandth of an inch
Browser-based and easy to use without installation
Provides clear numerical examples for quick reference

Examples

0.5 NM (UK) equals 36,480,000 mil
2 NM (UK) equals 145,920,000 mil

Common Use Cases

Interpreting distances on historical UK Admiralty marine charts
Converting old maritime or legal records to metric-compatible small units
Specifying paint or coating thickness in manufacturing industries
Defining trace widths and drill sizes in electronics fabrication
Describing wire diameters or shim tolerances in mechanical engineering

Tips & Best Practices

Verify if the measurement references the UK nautical mile or the international standard
Use digital tools to manage very large numbers resulting from conversions
Apply mil units primarily for precise engineering or manufacturing dimensions
Cross-check conversions when reconciling historical maritime data
Be aware of unit scale differences when comparing distances

Limitations

The UK nautical mile is slightly longer than the international nautical mile; conversions may not suit modern navigation without adjustment
Converting large distances to very small units can produce cumbersome, large numbers
Mil as a unit is best suited for fine measurements and not ideal for general geographic distances without digital assistance

Frequently Asked Questions

What is a nautical mile (UK) and how is it defined?: The UK nautical mile, also historically called the Admiralty nautical mile, is defined as exactly 6,080 feet or 1,853.184 metres. It is slightly longer than the international nautical mile.
What is a mil and where is it used?: A mil, also known as a thou, is a unit of length equal to one thousandth of an inch (0.001 in), used commonly in U.S. manufacturing and engineering for specifying small thicknesses and tolerances.
Why would someone convert from UK nautical miles to mils?: Converting from UK nautical miles to mils is useful when precise, very small-scale measurements are needed from historical maritime distances for engineering or manufacturing applications.

Key Terminology

Nautical Mile (UK) [NM (UK)]: A historic UK maritime length unit equal to exactly 6,080 feet or 1,853.184 metres, slightly longer than the international nautical mile.
Mil [mil, thou]: A unit of length equal to one thousandth of an inch (0.001 in), used mainly in manufacturing and engineering to specify precise small dimensions.
Conversion Rate: The factor used to multiply a length in one unit to convert it to another; here 1 NM (UK) equals 72,960,000 mil.

Quick Knowledge Check

How many mils equal one UK nautical mile (NM (UK))?

72,960 mil

72,960,000 mil

7,296,000 mil

What is a mil also called?

thou

furlong

fathom

Why is the UK nautical mile considered different from the international nautical mile?

It is exactly the same

It is defined as slightly longer

It is shorter

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