Working with millimeter scale

Development Getting Started & Setup
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1

I’ve started learning my way around UE Editor and have a question about scale between Blender and UE 5.3. The real world size of my objects are in millimeters. So when I import into UE navigating, zooming etc just flies past my object. Am I supposed to scale everything up to work in UE? Does working in millimeters affects physics? Is there a way to scale down the movement and zoom snapping to work with millimeter size objects?

I guess, what are best practices when working with small objects that are going to require accurate physics?

2

You can change the size of the Unreal Unit from Centimeters to Millimeters or even Micrometers in Project Settings - Editor - Appearance.
See also this very good article:
Scale and Measurement Inside Unreal Engine - techarthub