How can I find a transfer function from a Bode plot?

 

How do you find the bode plot from a transfer function?

Do the opposite!

 

Build the Zero-Pole-Gain representation of the TF. From the bode plot you can find the Poles pi, Zeros zi and DC gain K. You can write then the TF as
\(K \frac{\Pi (s-z_i)}{\Pi (s-p_i)}\)