Total Current Calculator – Parallel Circuit

This calculator determines the total current for a given source voltage and parallel resistor configuration.


  • any number of resistor values separated by commas
  • voltage across the resistors

The tool will provide the total current across the resistors

Total Current with Parallel Resistance Formula

Rtotal = (1/R1 + 1/R2 + 1/R3 +…. + 1/Rn)-1

Itotal = V/Rtotal

Example Calculation

Consider four resistors in parallel: 1 Ω, 2 Ω, 3 Ω, 4 Ω and 5 Ω. The total effective resistance is 0.44 Ω.

For a voltage value of 5V, the total current is 5/0.44 = 11.42 A

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