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