How does the Voltage Drop Calculator work?

Estimate voltage drop for a wire run. The tool calculates an estimate from the values entered.

Can I copy the result?

Yes. Use the Copy Result button to copy the current result summary.

Electrical

Estimate voltage drop for a wire run.

Current (amps)

One-way Length (ft)

Ohms per 1000 ft

Source Voltage

Primary Result -

Secondary Result -

Additional Result -

Formula

Voltage drop = current * wire resistance * distance factor

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