Parallel Resistor Calculator

*The following calculator is for reference only.

Calculate parallel resistance
Click the + button to add resistors. You can add upto 6 resistors in parallel. Enter the values in the textbox (in Ohms)
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Total Resistance is :
Parallel Resistor Equation
$$ \frac{1}{R_T} = \frac{1}{R_1} + \frac{1}{R_2}+ \frac{1}{R_3} + \ldots + \frac{1}{R_n} $$ where
  • RT – Equivalent parallel resistance; and
  • R1,R2,R3,…,Rn – Resistances of individual resistors numbered 1,2,3,….,n
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