Home improvement calculators — paint, tile & wallpaper
Estimate wall paint, straight-grid tile quantities and wallpaper rolls with each tool’s assumptions visible. Free to use, with no account needed.
Tile quantity calculator
Estimate a straight tile grid with grout joints, compare rotated tiles and round extras into boxes. See tile counts, box surplus and estimated box cost.
Wall paint calculator
Estimate wall paint from room dimensions, measured openings, coats and product coverage. Separate base gallons, extra paint, can count and purchased surplus.
Wallpaper roll calculator
Estimate strips, repeat matching and roll quantities.
Keep material estimates separate
Paint coverage, tile positions and wallpaper strips use different purchasing models. Check each product label and the actual layout before ordering. Each page separates its base quantity from extra material and package rounding.