Quickly calculate electrical admittance (Y), a fundamental measure of how easily an AC circuit or component allows current to flow. Our calculator determines admittance from impedance (Z) (resistance R and reactance X), or directly from its real (conductance G) and imaginary (susceptance B) components. This tool is essential for analyzing parallel AC circuits and understanding frequency response.
Formula:
Electrical Admittance (Y) is the reciprocal of impedance (Z) and is represented in Siemens (S). It describes how easily an AC current flows through a circuit.
The primary formula for admittance is:
Y = G + jB
Where:
Y: Electrical Admittance (Siemens, S)G: Conductance (Siemens, S), the real part of admittanceB: Susceptance (Siemens, S), the imaginary part of admittancej: The imaginary unit (√-1)
If you have Resistance (R) and Reactance (X), Conductance (G) and Susceptance (B) can be derived as follows:
G = R / (R² + X²)
B = -X / (R² + X²)
The magnitude of admittance is |Y| = √(G² + B²), and the phase angle is ∠Y = arctan(B/G) (using atan2(B, G) for accurate quadrant calculation).