# Rotate does not update dimensions

I'm new to Blender and I'm following some tutorial and reading the documentation. Here is described how to rotate or scale an object.

I imported an stl file that is shown rotated of 45 degrees on z-axis. When I select, its dimensions are:

• X 201 m
• Y 201 m
• Z 15 m

This is because it's rotated of 45° as said (it's a magic wand, like a rod). So I rotated it by 45° using the transform panel (or R key). Well, now it's aligned to the Y axis!

But the dimensions are still the same! I'm expecting something like:

• X 15 m
• Y 283 m
• Z 15 m

I'm in trouble now because I cannot scale it as desired. Surely I'm missing something obvious... but I cannot find it out from the documentation.

• you are confusing the object Local dimensions and its Global dimensions, if you rotate it in Object mode it won't change its Local dimensions, if will if you rotate it in Edit mode or if you apply the scale, meaning its Local axis will aligned with the Global therefore the dimension will be different in XYZ – moonboots May 19 '20 at 9:34