Parallel Resistor Calculator

Calculate Total Resistance & Circuit Parameters

Resistor Values

Ω
Ω
Ω
V

Enter voltage to calculate current and power

Parallel Circuit Formula

1/R_total = 1/R₁ + 1/R₂ + 1/R₃ + ...

In parallel, reciprocals add up. Same voltage across all resistors.

Parallel Circuit Properties

  • Same voltage across all resistors
  • Total resistance is less than smallest resistor
  • Current divides among branches
  • Total current = sum of branch currents
  • If one component fails, others still work