Tile and Flooring Material Calculator
Calculate the number of tiles or flooring planks needed for a room, including waste allowance for cuts and breakage.
Formulas Used
Room Area (sq ft): Room Length (ft) × Room Width (ft)
Effective Tile Size: (Tile Length + Grout Gap) × (Tile Width + Grout Gap) — in inches
Tiles Along Length: ⌈ Room Length (in) ÷ Effective Tile Length ⌉
Tiles Along Width: ⌈ Room Width (in) ÷ Effective Tile Width ⌉
Base Tile Count: Tiles Along Length × Tiles Along Width
Total Tiles to Order: ⌈ Base Tile Count × (1 + Waste% ÷ 100) ⌉
Estimated Cost: Total Tiles × Price per Tile
Assumptions & References
- Tiles are laid in a standard straight grid pattern (no diagonal or herringbone offset).
- The grout gap is uniform on all four sides of each tile.
- Ceiling (⌈ ⌉) is used for tile counts along each dimension to ensure full room coverage, including partial tiles at edges.
- A waste factor of 10% is recommended for straight layouts; 15–20% for diagonal or complex patterns.
- Waste accounts for cuts at walls, breakage during installation, and future repairs.
- Room dimensions are assumed to be rectangular. For irregular rooms, calculate each rectangular section separately and sum the totals.
- Price estimate covers material only; does not include adhesive, grout, underlayment, or labor costs.
- Reference: Tile Council of North America (TCNA) Handbook for Ceramic, Glass, and Stone Tile Installation.