Why use the US survey mile instead of the international mile?

The US survey mile maintains consistency with historical cadastral and geodetic data used in US surveying and mapping.

What industries commonly use mil units?

Mil units are common in US manufacturing and engineering for specifying thicknesses, clearances, and tolerances.

Is the conversion exact or approximate?

The conversion uses exact definitions based on official unit standards.

How to Convert Mile (US survey) to Mil (thou)

Convert lengths from the US survey mile to mil (thou) with this easy-to-use online unit converter, ideal for surveying, manufacturing, and engineering applications.

Mile (US survey) [mi]

Mil [mil, thou]

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

Mile (US survey) [mi] to Mil [mil, thou] Conversion Table

Mile (US survey) [mi]	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.

Mile (US survey) [mi] to Mil [mil, thou] Conversion Table
Mile (US survey) [mi]	Mil [mil, thou]

Explore More Length Units Converter

What Is This Tool?

This online converter transforms length measurements from the US survey mile to the mil (also known as thou). It helps bridge large-scale cadastral and geodetic data with fine-scale manufacturing and engineering requirements by converting between these distinct units.

How to Use This Tool?

Enter the length value in miles (US survey).
Select mile (US survey) as the input unit and mil (thou) as the output unit.
Click the convert button to obtain the length in mil units.

Key Features

Converts length units from mile (US survey) to mil (thou)
Supports applications in surveying, mapping, manufacturing, and electronics
Browser-based and user-friendly interface
Provides exact conversion following official definitions
Handles legacy and modern unit integration seamlessly

Examples

Convert 2 miles (US survey) to mil: 2 × 63,360,126.720253 mil = 126,720,253.44 mil
Convert 0.5 mile (US survey) to mil: 0.5 × 63,360,126.720253 mil = 31,680,063.36 mil

Common Use Cases

Interpreting legacy land surveys and cadastral measurements for modern precision work
Translating State Plane Coordinate System data into finely tuned engineering specifications
Specifying thicknesses, clearances, and tolerances in manufacturing and electronics fabrication

Tips & Best Practices

Ensure consistent usage of the US survey mile definition when working with historical data.
Consider the large magnitude of converted values when converting from miles to mil for practicality.
Verify unit contexts when integrating historical survey data with modern industrial measurements.

Limitations

The US survey mile slightly differs from the international statute mile and is mainly for legacy US use.
Large-to-small unit conversions can produce extremely large numbers, which may be unwieldy in daily use.
Accuracy depends on strictly following official unit definitions, especially when mixing old and new data.

Frequently Asked Questions

Why use the US survey mile instead of the international mile?: The US survey mile maintains consistency with historical cadastral and geodetic data used in US surveying and mapping.
What industries commonly use mil units?: Mil units are common in US manufacturing and engineering for specifying thicknesses, clearances, and tolerances.
Is the conversion exact or approximate?: The conversion uses exact definitions based on official unit standards.

Key Terminology

Mile (US survey): A legacy US unit of length equal to exactly 5,280 US survey feet, used mainly in cadastral and geodetic surveying.
Mil (thou): A unit of length equal to one thousandth of an inch, used in US manufacturing and engineering to specify very small distances.

Quick Knowledge Check

What does the US survey mile primarily measure?

Small manufacturing tolerances

Large land distances in surveying

Thickness of coatings

A mil is equal to what fraction of an inch?

One hundredth

One thousandth

One tenth

Why might converting miles to mil yield impractically large numbers?

Because mil is a very small unit

Because mile values are usually small

Because mil is larger than a mile

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