Is this AC resistance?

No. It is a DC / low-frequency lumped approximation; AC effects can raise effective resistance.

Are constants exact for every alloy?

No. Values are typical references; use supplier data when traceability matters.

Conductor Resistance Calculator

Uses R = ρ(T) L / A with a linear temperature model for annealed copper and aluminum references at 20 °C. Intended for DC resistance estimates of a single homogeneous conductor; AC skin and proximity effects are out of scope.

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如何使用

1Enter conductor length in meters and cross-section in mm².
2Select copper or aluminum.
3Set operating temperature in °C.
4Read resistivity at that temperature and resistance in ohms.

常见问题

Is this AC resistance?: No. It is a DC / low-frequency lumped approximation; AC effects can raise effective resistance.
Are constants exact for every alloy?: No. Values are typical references; use supplier data when traceability matters.