What Is This Tool?
This converter facilitates the transformation of area values from are (a metric unit equal to 100 square meters) to the U.S. survey acre, a unit mainly used in U.S. land surveying and legal property descriptions.
How to Use This Tool?
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Enter the area value measured in are (a) into the input field
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Select the target unit as acre (U.S. survey) [ac]
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Initiate the conversion to receive the equivalent area value in acres
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Use the converted results to assist with land planning, surveying, or legal documentation
Key Features
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Enables conversion from are (a) to acre (U.S. survey) with precise conversion rates
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Supports land measurement units commonly used in agriculture, real estate, and cadastral mapping
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Browser-based tool requiring no installation for instant use
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Provides clear examples to guide users through the conversion process
Examples
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10 a converts to 0.247104393 ac
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50 a converts to 1.235521965 ac
Common Use Cases
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Measuring small plots, gardens, or allotments where are is more suitable than hectares or square meters
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Describing parcel sizes in U.S. property deeds and land boundary documents
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Translating land area data between metric and U.S. customary units for cadastral mapping and agricultural planning
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Interpreting historical land records that use U.S. survey foot–based measurements
Tips & Best Practices
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Ensure consistent use of units throughout legal or technical measurements to avoid discrepancies
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Verify which acre definition applies in your context—U.S. survey acre or international acre—as they differ slightly
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Use this tool to simplify conversions when working across metric and U.S. customary systems
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Consult official cadastral or surveying documentation for precise area definitions in legal contexts
Limitations
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The U.S. survey acre is marginally larger than the international acre, which may cause slight differences
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Conversions between these units may introduce minor inaccuracies in highly precise applications
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Legal or technical contexts require careful unit consistency to prevent measurement errors
Frequently Asked Questions
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What is the are unit used for?
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Are is a metric area unit equal to 100 square meters, often used for small land plots like gardens, allotments, and agricultural fields.
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Why use the U.S. survey acre instead of the international acre?
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The U.S. survey acre is defined using the U.S. survey foot and is primarily used in U.S. land surveying, legal property descriptions, and cadastral records.
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How can I convert are to U.S. survey acres?
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Use the conversion factor 1 are equals approximately 0.0247104393 U.S. survey acres, or use this online converter for convenience.
Key Terminology
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Are (a)
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A metric unit of area equal to 100 square meters, often used for measuring small land plots and related to the hectare.
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Acre (US survey) [ac]
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A unit of area used in the U.S., defined as 43,560 square U.S. survey feet, slightly larger than the international acre, commonly used in land surveying and legal documentation.
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U.S. Survey Foot
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A unit of length used in U.S. surveying defined as exactly 1200/3937 meters, forming the basis for the U.S. survey acre.