What Is This Tool?
This unit converter transforms area measurements from square foot (US survey), mainly used in U.S. land surveying, into square mil [mil^2], a very small imperial-derived unit often applied in electronics and precision engineering.
How to Use This Tool?
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Enter the value in square foot (US survey) you want to convert
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Select square foot (US survey) as the input unit and square mil [mil^2] as the output unit
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Start the conversion to get the result in square mil [mil^2]
Key Features
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Converts area from square foot (US survey) to square mil [mil^2]
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Supports detailed conversions for very small areas used in electronics and manufacturing
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Browser-based and easy to use for quick area unit transformations
Examples
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2 square feet (US survey) converts to 288001152.00346 square mil [mil^2]
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0.5 square feet (US survey) converts to 72000288.000865 square mil [mil^2]
Common Use Cases
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Expressing the planar area of PCB copper traces and pads in electronics
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Describing cross-sectional area of rectangular conductors in electrical engineering
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Measuring very small surface areas in precision manufacturing and thin-film coatings
Tips & Best Practices
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Verify unit definitions when mixing square foot (US survey) with international units
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Use square mil for very small area measurements to maintain accuracy in detailed applications
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Double-check converted values when working in critical engineering or manufacturing tasks
Limitations
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Square foot (US survey) differs slightly from the international square foot, which may affect mixed-unit calculations
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Square mil is impractical for measuring large land or property areas
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Conversion accuracy relies on precise definitions of the US survey foot and small scale unit factors
Frequently Asked Questions
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What is a square foot (US survey)?
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It is a unit of area based on the U.S. survey foot, primarily used in land surveying and legal descriptions in the U.S. It differs slightly from the international square foot.
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What does square mil [mil^2] measure?
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Square mil is an imperial-derived unit of area used for very small surfaces, such as PCB copper traces and electrical conductor cross sections.
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Why convert square foot (US survey) to square mil [mil^2]?
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Converting to square mil allows expressing large land areas into very fine-scale units needed in electronics and precision manufacturing.
Key Terminology
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Square foot (US survey)
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An area unit based on the U.S. survey foot, used mainly in land surveying and legal descriptions within the United States.
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Square mil [mil^2]
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An extremely small unit of area equal to the square of one mil (0.001 inch), commonly used in electronics and precision manufacturing.
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Conversion rate
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The numerical factor used to convert from square foot (US survey) to square mil [mil^2], which is 1 square foot (US survey) = 144000576.00173 square mil [mil^2].