# Q value for a high pass filter

How to calculate the Q value for a high pass filter ? Ps: I'm a beginner in signal processing, so please put it in simple terms.

The transfer function of a second order high pass filter is $$H(s) = \frac{A s^2}{s^2+\frac{w_0}{Q}s+w_0^2}$$ where $w_0$ is the cutoff frequency, $Q$ is the $Q$-factor, and $A$ is the gain.