How to calculate your home square footage Juan Chaparro March 03, 2016 02:43 Follow Below are couple of sites that have great explanations: My very own favorite Khan Academy explains it in video Zillow How to Measure Your Home's Square Footage Or lastly check Dallas Central Appraisal District. Related articles How do we handle clutter? What form of payment you take? How will you access my home? Comments 0 comments Please sign in to leave a comment.