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In metric mode when creating a cube with 1m radius, Blender creates a cube with 2m radius.
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Blender's measurement system is little broken. Probably that is not ever even noticed, but when you create a cube (or any object), it is not what you expect it to be. The correct size of the new created objects is always inputted size / 2.




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Artturi Mäntysaari (Armmm) created this task.
Artturi Mäntysaari (Armmm) raised the priority of this task from to Normal.
Bastien Montagne (mont29) closed this task as Invalid.
Bastien Montagne (mont29) claimed this task.

You are mistaking radius with diameter… though using those words for a cube is slightly confusing. :P

You can see that 'radius' value as the radius of the inner sphere of the cube.

Oh, you are very much right, sorry about this confusion.

But would it be better to use diameters when creating new object instead of radius? For example if I'm box modeling house that is 15m x 8m x 5m. Now I need to create box and type 7.5m, to get that 15m. Then when the box is made, I need to scale the Y dimension to 8m and Z to 5m and then apply scale.

If I could type those dimensions to the new cube right at the beginning and maybe even add some subdivisions, it would make starting little bit faster.