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This wire resistance calculator can quickly compute the electrical properties of a specific wire - its resistance and conductance. Resistance describes how strongly a given cable opposes the flow of an electric current, and conductance measures a wire's ability to conduct it.
We will show you how to determine wire resistance manually and using the Wire Resistance Calculator below (just input the wire gauge and length of the wire to get the resistance in Ohms). Resistance in wires depends on specific resistivity, length, and cross-section of the wire.
All wire is copper. Contact resistance from interface to Device Under Test. Highest Expected Resistance for 4-wire (points combine at A and B): ohms. Highest Expected Resistance for true 4-wire (points combine on DUT):
🙋 With this tool, you can calculate the resistance of a copper wire or any other material. Our wire resistance calculator lets you select different wire materials with their corresponding resistivity. Feel free to experiment with it!
Round Wire Resistance Calculator. Calculates the dc Resistance of a single round wire of common conducting materials using Equation 2 below.
Resistance (R): \[ R = \frac{10.8 \cdot L}{A} \] Where: \(R\) is the resistance in ohms (Ω). \(L\) is the length of the wire in feet (ft). \(A\) is the cross-sectional area of the wire in circular mils (cmil).
This wire gauge calculator computes the diameter, cross-sectional area, and resistance per unit length of a wire once given a wire gauge number in either the American Wire Gauge (AMG) or Standard Wire Gauge (SWG) systems.
Calculate the electrical resistance of wires instantly with the Wire Resistance Calculator. Input wire material, length, cross-sectional area, and temperature. Essential tool for electrical engineering.
Formula for Wire Resistance Calculation: Wire Resistance (R) = (ρ * L) / A. Where: R is the wire resistance (ohms, Ω). ρ is the resistivity of the wire material (ohm-inch, Ω·in). L is the length of the wire (inches, in). A is the cross-sectional area of the wire (square inches, in²).
The Wire Resistance Calculator provides a quick and accurate means of determining the resistance of a wire based on its material, length, and cross-sectional area.