Hi
I’ve started modeling my house, and have a little problem. I want to scale everything so that blender units aligns with meters and. Now everything is in a 1/5 scale. I tried this:
select all objects (a) -> Scale (s) -> 5
But all lengths are still the same blender units!?!
If I join all objects and scale them in edit mode, then the scaling works, but then I’ll have to separate them again. 
Maybe, you could parent everything to an Empty and then scale that up until you get the dimensions you need.
That’s because when scaling/moving/rotating the object the mesh isnt actually modified and as such edge lengths stay the same in edit mode, after scaling u need to apply scale & rotation:
Object->Clear/Apply->Apply Scale and Rotation or Ctrl-A (one of the hotkeys u might want to remember)
hope that helps
-Kroni
Thanks, ctrl-a did the trick 