Parallel Resistor Calculator

This tool calculates the equivalent resistance of multiple resistors connected in parallel. This configuration is commonly used to create specific resistance values not found in standard sets or to increase the power handling capability of a circuit.

Use this tool to:

  • Create custom resistance values by combining standard E24 or E96 resistors in parallel to reach high-precision targets.
  • Divide current flow across multiple branches while maintaining the same voltage drop across all components.
  • Reduce the overall resistance of a circuit branch to meet specific load requirements for power supplies or amplifiers.
Resistor Values (Ω)
Equivalent Resistance

*Formula: 1/Req = 1/R1 + 1/R2 + ... + 1/Rn. For two resistors: Req = (R1 * R2) / (R1 + R2).

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