What is a circular mil?

A circular mil is a unit of area equal to the cross-sectional area of a circle with a one mil diameter (0.001 inch), primarily used to specify wire sizes in electrical engineering.

How is the square foot (US survey) different from the international square foot?

The square foot (US survey) is based on the U.S. survey foot, which differs slightly from the international foot, resulting in a small variation in area measurement.

When should I use this circular mil to square foot (US survey) converter?

Use this converter when you need to compare or integrate electrical conductor areas with land surveying measurements, especially in U.S. legal and cadastral contexts.

How to Convert from Circular mil to Square foot (US survey)?

Easily convert area measurements from circular mil to square foot (US survey) using our online unit converter designed for electrical and land surveying contexts.

Circular mil

Square foot (US survey)

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

Circular mil to Square foot (US survey) Conversion Table

Circular mil	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.

Circular mil to Square foot (US survey) Conversion Table
Circular mil	Square foot (US survey)

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What Is This Tool?

This unit converter translates area values from circular mil, a unit used for electrical conductor cross-sections, to square foot (US survey), a land measurement unit used in U.S. surveying and legal property descriptions. It supports professionals working across electrical engineering and land surveying fields.

How to Use This Tool?

Enter the numerical value of the area in circular mil.
Select circular mil as the source unit and square foot (US survey) as the target unit.
Click the convert button to see the equivalent area in square foot (US survey).
Use the results for electrical sizing, survey calculations, or property documentation.

Key Features

Converts area between circular mil and square foot (US survey) using precise conversion rates.
Supports applications in electrical wire sizing and U.S. land survey measurements.
Provides clear conversion results suitable for engineering and cadastral documentation.
Browser-based tool requiring no installation for immediate use.
Handles very small to large values accurately in relevant fields.

Examples

100,000 circular mil converts to approximately 0.0005454 square foot (US survey).
5,000,000 circular mil equals about 0.02727 square foot (US survey).

Common Use Cases

Calculating cross-sectional areas of electrical wires for engineering specifications.
Interpreting or recording land parcel sizes using U.S. survey foot units.
Converting American Wire Gauge (AWG) wire sizes to compatible land survey area units.
Integrating electrical conductor area with legal land measurement documents.

Tips & Best Practices

Double-check unit selection before conversion to ensure accuracy.
Use this tool when working with documents combining electrical and land measurement units.
Remember that U.S. survey foot slightly differs from the international foot, affecting high-precision calculations.
Keep in mind that circular mil values convert to very small decimal squares feet due to unit size differences.

Limitations

Circular mil is significantly smaller than square foot, leading to very small decimal results.
The U.S. survey foot differs from the international foot, possibly causing minor discrepancies.
This conversion is mainly relevant in specialized fields mixing electrical and land measurement contexts.

Frequently Asked Questions

What is a circular mil?: A circular mil is a unit of area equal to the cross-sectional area of a circle with a one mil diameter (0.001 inch), primarily used to specify wire sizes in electrical engineering.
How is the square foot (US survey) different from the international square foot?: The square foot (US survey) is based on the U.S. survey foot, which differs slightly from the international foot, resulting in a small variation in area measurement.
When should I use this circular mil to square foot (US survey) converter?: Use this converter when you need to compare or integrate electrical conductor areas with land surveying measurements, especially in U.S. legal and cadastral contexts.

Key Terminology

Circular mil: A unit of area used for electrical wires equal to the area of a circle with a diameter of one mil (0.001 inch).
Square foot (US survey): A unit of area based on the U.S. survey foot, primarily used in U.S. land surveying and legal description.
U.S. survey foot: A measurement unit slightly different from the international foot, used primarily in U.S. surveying.

Quick Knowledge Check

What does one circular mil represent?

The cross-sectional area of a circle with a 1-inch diameter

The area of a circle with a diameter of one mil (0.001 inch)

The area equivalent to one square foot

In which field is the square foot (US survey) mainly used?

Electrical engineering for wire sizing

U.S. land surveying and legal property descriptions

International land measurement standards

Why might conversion results from circular mil to square foot (US survey) be very small?

Because circular mil is a much smaller unit than square foot (US survey)

Because square foot (US survey) is smaller than circular mil

Because the units are incompatible

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