RoomCalculator is run by Ahmad Ali, a tech educator and the founder of MR Tech Academy. This site exists to make home projects less stressful: measure once, calculate clearly, and buy only what you actually need. Here you will find free, simple calculators for paint, wallpaper, tile, room size, rugs, and layout, plus plain-English guides. All results are estimates — always double-check with a tape measure or contractor before buying materials.