Integrated calculator

It would be nice to add a scientific calculator integrated in some way in SketchUp, it could lack numeric keys because you could use as values ​​the measurements of the model with which you are working, or use the numeric keys of the physical keyboard.

Have you tried Window → Ruby Console?
It is quite scientific since it supports powers, trigonometric functions and is even extendible to quantum mechanics (if you ever go down to such levels).

The only downside is that it has no numerical buttons to click with a mouse, only a text field for keyboard input.