The RLC Circuit Calculator analyses series or parallel RLC networks and reports impedance, reactances, resonant frequency, quality factor and −3 dB bandwidth in one place.
How to Use RLC Circuit Calculator
- Choose the topology — series or parallel RLC.
- Enter R, L, C — values with engineering unit prefixes are accepted.
- Enter the operating frequency — used to compute reactances and impedance.
- Read the full report — XL, XC, |Z|, f₀, Q and BW are listed, with the dominant regime highlighted.
Formula & Theory — RLC Circuit Calculator
XL = 2π f L
XC = 1 / (2π f C)
Series: Z = sqrt(R² + (XL − XC)²)
f0 = 1 / (2π · sqrt(L · C))
Q = (1 / R) · sqrt(L / C) (series)
BW = f0 / QUse Cases for RLC Circuit Calculator
- Filter design — design band-pass and band-stop filters around a target f₀.
- RF matching — analyse resonant matching networks at a known frequency.
- Audio engineering — model loudspeaker crossovers and notch filters.
- Education — visualize how Q and bandwidth respond to component changes.