Why is the U.S. survey acre slightly larger than the international acre?

The U.S. survey acre is defined using the U.S. survey foot, which differs slightly from the international foot, resulting in a marginally larger area.

Can I use this tool to convert to international acres?

No, this converter only supports conversions from square miles to U.S. survey acres based on the U.S. survey foot definitions.

What are common applications of converting square miles to U.S. survey acres?

It is primarily used for interpreting land measurements in legal property descriptions, cadastral maps, and agricultural records in the United States.

How to Convert from Square Mile [mi^2] to Acre (US survey) [ac]

Learn how to accurately transform area measurements from square miles to U.S. survey acres using this precise, easy-to-use online converter tailored for land surveying and property measurements.

Square mile [mi^2]

Acre (US survey) [ac]

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

Square mile [mi^2] to Acre (US survey) [ac] Conversion Table

Square mile [mi^2]	Acre (US survey) [ac]

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 mile [mi^2] to Acre (US survey) [ac] Conversion Table
Square mile [mi^2]	Acre (US survey) [ac]

Explore More Area Units Converter

What Is This Tool?

This converter enables users to change area measurements from square miles to U.S. survey acres, facilitating detailed land area assessments commonly needed in U.S. land surveying, legal property descriptions, and agricultural records.

How to Use This Tool?

Enter the land area value in square miles (mi²) into the input field.
Select the source unit as square mile [mi²] and the target unit as acre (US survey) [ac].
Click the convert button to see the corresponding value in U.S. survey acres.
Use the results for land assessment, legal documentation, or cadastral mapping.

Key Features

Converts square miles (mi²) to U.S. survey acres (ac) precisely.
Supports land measurement conversions critical for cadastral mapping and legal surveys.
Browser-based and user-friendly interface for quick calculations.
Includes unit definitions relevant to U.S. customary and imperial area measures.

Examples

Converting 2 square miles results in approximately 1,279.99488 U.S. survey acres.
Converting 0.5 square miles equals about 319.99872 U.S. survey acres.

Common Use Cases

Describing large land areas of cities and counties for demographic and planning purposes.
Translating large-scale land measurements into parcel sizes used in property deeds.
Interpreting cadastral maps and historical agricultural land statistics based on U.S. survey feet.
Managing geographic information systems (GIS) where precise land area conversions are necessary.

Tips & Best Practices

Ensure correct selection of units to avoid discrepancies between international and U.S. survey acres.
Use this tool to verify land area figures in legal and cadastral documents accurately.
Refer to the tool’s definitions to understand unit sizes and applicability in your context.

Limitations

Slight differences exist between U.S. survey acre and international acre which may affect precision.
Legal and cadastral definitions using U.S. survey feet may evolve, requiring updated references.
This converter does not process international acre or other area units not specified.

Frequently Asked Questions

Why is the U.S. survey acre slightly larger than the international acre?: The U.S. survey acre is defined using the U.S. survey foot, which differs slightly from the international foot, resulting in a marginally larger area.
Can I use this tool to convert to international acres?: No, this converter only supports conversions from square miles to U.S. survey acres based on the U.S. survey foot definitions.
What are common applications of converting square miles to U.S. survey acres?: It is primarily used for interpreting land measurements in legal property descriptions, cadastral maps, and agricultural records in the United States.

Key Terminology

Square Mile [mi²]: An imperial and U.S. customary unit of area equal to the area of a square with sides one international mile long, exactly 2,589,988.110336 square meters.
Acre (US survey) [ac]: An area unit defined as 43,560 square U.S. survey feet, used mainly in U.S. land surveying and legal cadastral records, slightly larger than the international acre.
U.S. Survey Foot: A unit of length used in defining the U.S. survey acre, distinct from the international foot, equal to exactly 1200/3937 meters.

Quick Knowledge Check

What unit defines the U.S. survey acre?

International foot

U.S. survey foot

Metric meter

Which unit is larger, a square mile or a U.S. survey acre?

U.S. survey acre

Square mile

They are equal

Why might small discrepancies occur when converting land units?

Because of rounding to whole numbers

Due to differences between U.S. survey and international acre definitions

Because the units are identical

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