Reading Volume Fader on Cubase Pro 10.5

Hello everybody,

I have a dumb question and hope that you guys can help me out… I am currently doing gain staging for my mix at the ideal -18dbFS for my track. Could you please let me know how to read the volume fader in Cubase Pro 10.5 at the value of -18dbFS as the number showing on the volume fader is quite confusing when comparing with my VU meter plug in.

Thanks a lot.