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Circuit 9 uses Updated August 10, 2026

Electrical Admittance Calculator

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Resistance
ohms
Reactance
ohms

This admittance calculator finds the admittance Y — the reciprocal of impedance — from impedance, or from conductance and susceptance. Enter the values above.

Formulas

Y = 1 ÷ Z          Y = G + jB
|Y| = √(G² + B²)
  • G — conductance, B — susceptance (siemens)

Example

Z = 50 Ω (resistive): Y = 1 ÷ 50 = 0.02 S.

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Frequently Asked Questions

What is admittance?

It is the reciprocal of impedance, measuring how easily AC flows. It combines conductance and susceptance.

How do I calculate admittance?

Take the reciprocal of impedance: Y = 1 / Z. For a 50-ohm resistor, Y is 0.02 siemens.

What are conductance and susceptance?

Conductance is the real part of admittance, susceptance the imaginary part, both in siemens.

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