Old thread, I know, but I was just playing around trying to figure this out and google brought me here, so I figure others may find it.
TextRender has a GetTextLocalSize. I’m not sure which version it was added to, but I’m using it on 4.25. This is a big deal for people using UE for things other than games (broadcast AR/VS/XR), as we’re often delivering text content on our broadcasts.