I don't want it. I'm used to using browser for conversion from imperial to normal and vice versa. I do this a lot and I am used to seeing the result in a very specific part of my screen (brain automation). This functionality forces me to change the way I use my browser and I waste time on thinking "why on Earth don't I see my conversion result?" just to realise Opera is showing something and preventing me from seeing what I want by hitting enter.
It also doesn't work as well as google for conversion as it doesn't recognize comma as a decimal sign. Instead of recognizing something is wrong it just displays an incorrect result.
How do I turn it off? I can't find it in the settings menu.