This tool is part of these guided projects. Each project provides step-by-step instructions with checklists and all the tools you need in one place.
Plan your measurements, tile quantity, grout, thinset, layout, curing, and finishing steps.
Plan your bathroom remodel budget, calculate tile and drywall, waterproof correctly, and follow a proven demo-to-finish sequence.
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Calculate how many floor or wall tiles you need. Enter room size, tile dimensions, grout gap, and waste percent for accurate tile count and coverage.
Estimate hardwood flooring for your room. Enter dimensions and plank size to get square footage, box count, and plank quantity with 10% cut waste included.
Calculate carpet square footage and linear feet from room size and roll width. Estimate seams, waste, and total carpet to order for wall-to-wall installation.
Grout fills joints between tiles. Wider joints and thicker tile increase grout consumption per square foot.
Grout per tile ≈ Joint Width × Joint Depth × Perimeter × Tile Count factorRule of thumb: 25 lb bag covers 50–100 sq ft depending on joint width and tile size. Wide joints on large format tile use more grout.
Grout (lb) ≈ Tiled Area (sq ft) × Joint Factor × 1.5Standard grout bags are 25 lb. Round up and buy all grout from one batch for color consistency.
Bags = ceil(Total Weight ÷ 25)Updated: July 2026
Standard bathroom floor needs roughly 2–3 bags of 25 lb sanded grout for 1/8″ joints at 1/2 joint depth.
Wide joints on large tile dramatically increase grout use — estimate 4+ bags per 100 sq ft versus 2 bags for small tile.
Wall tile with joints under 1/8″ uses unsanded grout. Smaller area but same joint volume formula applies per sq ft.
Calculate sanded or unsanded grout quantities for floor and wall tile before mixing or buying premixed tubs. Enter tile dimensions, joint width, and total tiled area to estimate grout volume and bag count.