What Is This Tool?
This online converter helps transform electrical resistivity measurements from microhm inch units into circular mil ohm per foot units, enabling easy comparison and calculation of resistance in practical wiring and conductor sizing.
How to Use This Tool?
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Enter the resistivity value expressed in microhm inch (μΩ·in)
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Select the conversion to circular mil ohm per foot
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Submit to get the equivalent resistivity in circular mil ohm/foot
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Use the converted value for wiring resistance calculations or conductor sizing
Key Features
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Converts electrical resistivity from microhm inch to circular mil ohm/foot units
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Uses a precise conversion factor based on standard electrical properties
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Supports engineers and technicians in material specification and conductor design
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Browser-based with simple input and output for quick results
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Bridges bulk material resistivity data with conductor resistance tables
Examples
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1 μΩ·in converts to approximately 15.2788745324 circular mil ohm/foot
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2 μΩ·in converts to approximately 30.5577490648 circular mil ohm/foot
Common Use Cases
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Relating bulk material resistivity data to conductor resistance values
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Generating conductor resistance tables based on AWG or kcmil sizing
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Comparing resistivity of copper and aluminum conductors for power distribution
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Supporting quality control in electronics and connector manufacturing
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Performing engineering calculations for wire and busbar thermal and electrical design
Tips & Best Practices
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Ensure the material and conductor parameters align with the unit definitions for accurate conversions
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Confirm that resistivity measurements correspond to DC or low-frequency conditions since skin effects may alter actual resistance
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Use uniform conductor geometry assumptions when applying converted values to resistance calculations
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Cross-check converted data with manufacturer specifications where available
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Leverage this conversion to easily switch between bulk material data and practical wiring resistance figures
Limitations
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Assumes uniform material properties and cross-sectional conductor shapes
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Does not account for temperature variations or frequency-dependent effects such as skin or proximity effects
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Primarily suitable for DC or low-frequency resistivity evaluations in conductor design
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Actual resistance may differ if conductor geometry or environmental conditions vary significantly
Frequently Asked Questions
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What does microhm inch measure?
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Microhm inch (μΩ·in) quantifies electrical resistivity by representing resistance intrinsic to a material over a length of one inch.
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Why convert microhm inch to circular mil ohm/foot?
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Converting to circular mil ohm/foot helps relate bulk material resistivity to the actual resistance of conductors sized by length in feet and cross-sectional area in circular mils.
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Can this conversion be used for all frequencies?
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No, it is generally suitable for DC or low-frequency resistivity where skin and proximity effects are negligible.
Key Terminology
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Microhm inch (μΩ·in)
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A unit of electrical resistivity equal to one millionth of an ohm times one inch, expressing intrinsic material resistance.
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Circular mil ohm/foot
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A unit of resistivity relating conductor resistance to length in feet and cross-sectional area in circular mils.
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Electrical resistivity
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A fundamental property that quantifies how strongly a material opposes the flow of electric current.