Cable Voltage Drop Calculator

Calculate estimated voltage drop for copper or aluminum cables in DC, single-phase AC and three-phase AC circuits.

Enter the distance from source to load.

Advanced AC Input

Use project-specific cable data when available.

Calculation Results

Voltage Drop —
Voltage Drop % —
Receiving Voltage —
Resistance —
System —
Conductor —
One-Way Length —
Load Current —
Power Factor —
Reactance —
Engineering Note

This calculator provides a preliminary engineering estimate. Final cable selection should be verified against the actual cable data, installation method, operating temperature, applicable standards and project requirements.