Voltage Drop Calculator

DC Wire Voltage Drop

This calculator estimates voltage drop in a two-wire DC circuit from current, wire length, and conductor resistance.

Method: It multiplies current by round-trip wire length and resistance per meter. Percent drop compares that drop with supply voltage.

Understanding Voltage Drop

1. What This Calculator Measures

Voltage drop estimates voltage lost in a wire because of conductor resistance.

2. How the Calculation Works

The calculator multiplies current by round-trip wire length and resistance per meter, then compares the drop with supply voltage.

3. Formula or Rule Used

Vdrop = I x length x resistance.

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