I personally used this app to create the whole floorplan - https://www.magicplan.app/en/ https://www.magicplan.app/en/ Then I just double checked wall length w

I personally used this app to create the whole floorplan - https://www.magicplan.app/en/ https://www.magicplan.app/en/ Then I just double checked wall length with a tape measure, because I wanted 100% exact measurements, out of the box the app was 95% accurate. In my experience this is more than enough for the purposes of furniture placement planning and things like that, and it's pretty fast to do too.