Tile Calculator by Shape
Choose your tile shape, enter its real dimensions, and estimate the square footage, individual tiles or sheets, and full boxes to buy.
Enter your project
How the tile calculator works
CalcCaddy finds the project area, adds your waste allowance, divides that coverage by the selected tile shape's face area, and rounds up to whole tiles or sheets. It then rounds the order up again to full boxes.
Square, rectangular, subway, plank, hexagon, triangle, diamond, octagon, and circular tiles use geometric area formulas. Fish-scale, arabesque, and irregular mosaics vary by design, so the calculator uses the manufacturer-listed coverage for one tile or sheet.
Worked example
A 12 × 10 ft room measures 120 sq ft. With 10% waste, plan for 132 sq ft. A 12 × 12 in square tile covers 1 sq ft, so the project needs 132 tiles. If each box contains 10 tiles, round up to 14 boxes, or 140 sq ft of purchased coverage.
Tile shape formulas
Ordering assumptions
The estimate treats the project as one rectangle and uses the entered tile dimensions as face coverage. Real installations can require more material for diagonal layouts, borders, patterns, unusable offcuts, breakage, shade-lot matching, and future repairs. The package's stated square-foot coverage controls the final purchase.
Frequently asked questions
Does grout width change the tile count?
It can. This calculator intentionally does not subtract grout joints because real joints, edge cuts, and layout offsets interact. Use the result as an order estimate and compare it with the box coverage.
How much waste should I add?
Ten percent is a common starting point for a straight layout in a simple room. Diagonal patterns, many corners, fragile tile, or a repeating pattern may call for 15% or more.
Why do specialty shapes use listed coverage?
Fish-scale, lantern, arabesque, and mixed mosaics do not have one universal outline. Manufacturer-listed face or sheet coverage is more reliable than guessing from an overall length and width.