The big question about Unreal 4 Scale

This is a very old thread but just wondering if anyone has had experience with scale conversion between SketchUp and UE4? I model in millimetres in SketchUp and exported FBX with scale factor of 1.0 but it appears that my model is very small in UE so I can’t drop a character into the environment I created. As it is architectural, scale is critical so I’d like to scale up in UE accurately. If there’s a way of ensuring good scale conversion from SketchUP, then that would be good to know as well.