What is a square mil (mil^2)?

A square mil is the area of a square with sides of one mil (0.001 inch), used mainly for very small areas such as PCB traces or thin film coatings.

Where is the square foot (US survey) mainly used?

It is primarily used in U.S. land surveying, legal property descriptions, and related cadastral and geodetic surveys.

Can I use this tool for converting large land areas?

This tool is designed to convert very small areas in square mil to larger units in square foot (US survey), but for large areas, specialized land surveying tools are recommended.

How to Convert from Square mil [mil^2] to Square foot (US survey)?

Easily convert area values from square mil (mil^2), a very small imperial-derived unit used primarily in electronics and precision manufacturing, to square foot (US survey), a unit used mostly in U.S. land surveying and legal property descriptions.

Square mil [mil^2]

Square foot (US survey)

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

Square mil [mil^2] to Square foot (US survey) Conversion Table

Square mil [mil^2]	Square foot (US survey)

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.

Square mil [mil^2] to Square foot (US survey) Conversion Table
Square mil [mil^2]	Square foot (US survey)

Explore More Area Units Converter

What Is This Tool?

This converter allows you to transform area measurements from square mil (mil^2), which represents very small planar areas often used in electrical engineering, into square foot (US survey), a land measurement unit widely applied in U.S. cadastral surveying and legal contexts.

How to Use This Tool?

Enter the area value in square mil (mil^2) you wish to convert.
Select square mil (mil^2) as the starting unit and square foot (US survey) as the target unit.
Click the convert button to see the equivalent area in square foot (US survey).
Review the output and use it for your measuring or documentation needs.

Key Features

Converts from square mil (mil^2) to square foot (US survey) using the precise conversion factor.
Supports measurement units relevant to electronics, manufacturing, and land surveying.
Browser-based and straightforward to use for converting very small to larger area units.
Provides example conversions to aid understanding of scale differences.
Helps relate precision engineering areas to legal land measurement units.

Examples

1,000,000 square mil converts to approximately 0.0069444167 square foot (US survey).
500,000 square mil converts to approximately 0.0034722083 square foot (US survey).

Common Use Cases

Specifying planar areas for PCB copper traces and pad dimensions in imperial units.
Describing cross-sectional areas of rectangular or flat conductors in electrical engineering.
Expressing very small surface areas in thin-film coatings and precision manufacturing.
Recording parcel and deed areas in U.S. land surveys using survey-foot units.
Performing state plane coordinate and geodetic surveys involving historical measurement units.

Tips & Best Practices

Use this conversion for relating very small precision areas to larger land measurement units.
Ensure you distinguish between square mil and circular mil to avoid confusion.
Confirm the measurement context since the US survey foot differs from the international foot.
Use the tool for approximate conversions when handling vastly different unit scales.
Double-check results when applying the conversions in legal or survey documentation.

Limitations

Square mils are intended only for extremely small areas, which can result in very small decimal outputs when converted.
Square foot (US survey) applies to much larger land measurements and may not suit technical precision applications.
The U.S. survey foot differs slightly from the international foot, so exact precision requires careful context consideration.

Frequently Asked Questions

What is a square mil (mil^2)?: A square mil is the area of a square with sides of one mil (0.001 inch), used mainly for very small areas such as PCB traces or thin film coatings.
Where is the square foot (US survey) mainly used?: It is primarily used in U.S. land surveying, legal property descriptions, and related cadastral and geodetic surveys.
Can I use this tool for converting large land areas?: This tool is designed to convert very small areas in square mil to larger units in square foot (US survey), but for large areas, specialized land surveying tools are recommended.

Key Terminology

Square mil [mil^2]: An area unit representing a square with 1 mil sides (0.001 inch), used for very small planar areas in electronics and precision manufacturing.
Square foot (US survey): An area unit based on the U.S. survey foot, used mainly in land surveying and legal real estate contexts within the United States.
Conversion rate: The factor 1 square mil equals 6.9444166666944×10⁻⁹ square foot (US survey), used to convert between these units.

Quick Knowledge Check

What does one square mil represent?

Area of a square with sides of one inch

Area of a square with sides of one mil (0.001 inch)

Area of a circle with 1 mil diameter

Which unit is primarily used in U.S. land surveying?

Square mil

Square foot (US survey)

International square foot

Why should conversions between square mil and square foot (US survey) be handled carefully?

Because square mil is used for large areas

Because the US survey foot differs slightly from the international foot

Because both units measure exactly the same area

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