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Passive networks

Resistors, capacitors and inductors combined in series, parallel and mixed networks. Solves in both directions and ends at a standard part value.

Series Resistance CalculatorResistors end to end. The total is the plain sum, and the same current flows through every one.
Parallel Resistance CalculatorResistors across the same two nodes. The total is always smaller than the smallest branch.
Mixed Series-Parallel Resistance CalculatorAny nesting of series and parallel resistor groups, reduced from the inside out.
Series Inductance CalculatorInductors end to end, assuming no mutual coupling. Adds like resistance in series.
Parallel Inductance CalculatorInductors across the same two nodes, assuming no mutual coupling. Reciprocal form, like resistors.
Mixed Series-Parallel Inductance CalculatorAny nesting of series and parallel inductor groups, assuming no mutual coupling.
Series Capacitance CalculatorCapacitors end to end. This is the reciprocal case - series capacitance is always LESS than the smallest one.
Parallel Capacitance CalculatorCapacitors across the same two nodes. This is the additive case - parallel capacitance simply adds.
Mixed Series-Parallel Capacitance CalculatorAny nesting of series and parallel capacitor groups. Capacitors are the dual of resistors throughout.

Also coming

Delta-to-star and star-to-delta conversionsoon
Resistor pairs that hit an awkward target valuesoon
Attenuator pads: T, pi and bridged-T, for a given loss and impedancesoon
Tolerance stacking across a whole network, worst case and root-sum-squaresoon