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Online resistance calculator

Online calculator

Compute online the resistance of a component, wire or cable based on

Resistivity
\( \times 10^{-8} \: \Omega.m \)
Length
m
Area
mm²
Resistance
Ω

Explanation

Calculate the resistance based on length, material and cross-sectional area

The formula used in this calculator is:

$$ R = \dfrac{l}{S} \times \rho $$

with:

For the values of resistivity, see the following table.

Table of resistivity

The following table presents the most used resistivity. For more values, please see this page.

Material Resistivity
Silver \( 1.59 \times 10^{-8} \: \Omega.m \)
Copper \( 1.72 \times 10^{-8} \: \Omega.m \)
Gold \( 2.44 \times 10^{-8} \: \Omega.m \)
Aluminium \( 2.65 \times 10^{-8} \: \Omega.m \)
Tungsten \( 5.6 \times 10^{-8} \: \Omega.m \)
Brass \( 7 \times 10^{-8} \: \Omega.m \)
Nickel \( 6.99 \times 10^{-8} \: \Omega.m \)
Iron \( 9.7 \times 10^{-8} \: \Omega.m \)

Last update : 05/14/2021