Tile Calculator

To find the number of tiles needed, calculate the total square footage of your area (Length × Width), multiply by 1.10 to 1.15 to add a 10% to 15% waste factor for cutting and edge pieces, then divide by the square footage of a single tile. For example, a 100 sq ft room with 12"×12" tiles (1 sq ft each) at 10% waste requires 110 tiles.

Add **10%** for standard grid layouts with square or simple rectangular tiles. Add **15%** for diagonal patterns, running bond (offset), or rooms with many angles, closets, and doorways. Add **20%** for intricate patterns like herringbone, chevron, or mosaic tile sheets.

Check the packaging specification for 'Square Feet per Box' (typically 10 to 15 sq ft per box depending on the tile manufacturer). Divide your total square footage (including waste) by the sq ft per box, and always round UP to the nearest full box.

Yes, always keep at least one unopened extra box from the same dye lot. Future tile repairs or plumbing work may require replacing tiles, and manufacturers frequently discontinue specific styles or produce slightly different color dye lots in subsequent production runs.

Grout quantity depends on tile size and grout joint width. Larger tiles (like 12"×24" or 24"×24") have fewer seams and require less grout (~0.5 lb per 10 sq ft), while small mosaic or subway tiles have many joints and need more (~1 to 1.5 lbs per 10 sq ft).