Parallel / Series Combiner — Circuit Copilot

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1/R_total = 1/R₁ + 1/R₂ + ... + 1/R_n

Total

3 values · parallel resistors

Resistors in series: just add them. R = R1 + R2 + ...
Resistors in parallel: reciprocal sum. Total is always less than the smallest resistor.
Capacitors in parallel: just add them (opposite of resistors).
Capacitors in series: reciprocal sum. Total is always less than the smallest capacitor.

Handy shortcut: two equal resistors in parallel = half of one. Two equal caps in series = half of one.