Comment 4 for bug 171976

I agree with Krzystof, I do think that such a feature will be used by a significant proportion of Inkscape's user base. Imho this request is out of scope for Inkscape and it quite probably will not fit in the GUI (you would need another button/selector for scales).

I propose to either close this report, or make the zoom entry field allow entering basic mathematical expressions (Bug #171282)