Frequency Bandwidth Calculator
Find bandwidth from center frequency and quality factor.
Bandwidth is the frequency range a resonant circuit or filter passes around its center.
The math behind it
BW = f₀ ÷ Q. A higher Q gives a narrower, more selective bandwidth.
Worked example
100 kHz with Q 50 → 2 kHz bandwidth.
FAQ
Narrow or wide bandwidth?
Narrow for selectivity (tuning), wide for carrying more information.