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ElecToolsHQ

Voltage Drop Percentage Calculator

Calculate voltage drop as a percentage of source voltage (%VD = (VD ÷ V) × 100).

Formula

%VD = (VD ÷ V) × 100

%VD
Voltage drop, as a percentage of source voltage
VD
Voltage drop, in volts
V
Source voltage, in volts

What this calculator does

Expresses a voltage drop as a percentage of the circuit's source voltage.

Use cases

  • Check whether a circuit's voltage drop stays within a target percentage
  • Compare voltage drop percentage across circuits of different voltages
  • Convert a measured voltage drop into a percentage for a report

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