Tile Calculator

Use it when your task matches one of these common needs: Estimate floor tile count from square feet. Estimate wall, backsplash, or shower tile count. It works best when you already know project square feet, tile length and width in inches, and the waste percent you want to add.

In plain language: The calculator uses tile area = tile length inches x tile width inches / 144, adjusted area = project square feet x (1 + waste percent / 100), and tiles needed = ceiling(adjusted area / tile area). The examples on the page are there so you can compare your inputs with a tile-count example before copying the answer.

Project area (ft2): the floor, wall, backsplash, or shower surface area before extra tile is added. Tile length and width (in): the visible face size of one tile, not the box size or carton coverage. Waste (%): extra tile for cuts, breakage, pattern layout, chipped corners, and a few future repair pieces. Tiles needed: the rounded-up tile count before you convert it to boxes or cartons.

Read the headline estimate first, then check the material, waste, coverage, and unit lines. For project tools, the supporting lines are often the difference between a rough idea and a list you can actually shop from.

This is a planning count, not a full installer takeoff. Real projects can change with grout joints, layout direction, cuts at edges, diagonal or herringbone patterns, broken pieces, spare tiles, box coverage, shade lots, trim, thinset, waterproofing, and store rounding. Also check the tile box coverage, tiles per box, grout joint, layout pattern, shade lot, and whether floor, wall, or shower surfaces should be measured separately.

A 12 x 12 inch tile covers 1 square foot. For 120 square feet with 10% waste, the calculator uses 132 square feet and returns 132 tiles.

Yes for a first count. Measure each shower wall or floor area, add the square feet together, and use a higher waste percent if there are niches, benches, plumbing cuts, mosaics, or many small pieces.

Enter the surface you are actually tiling. For a floor, use floor square feet. For a wall, backsplash, or shower, measure each rectangle, subtract large openings when needed, and add the areas together.

Ten percent is a common starting point for simple straight layouts. Use more for diagonal layouts, herringbone, small rooms with many edge cuts, fragile tile, patterned tile, or hard-to-replace colors.

It can change the final layout, especially across long runs. This calculator uses the tile face size you enter, so check grout joint width, starting lines, and cut rows before ordering exact boxes.

Divide the tile count by the number of tiles per box and round up, or compare the adjusted square feet with the box coverage printed on the product label. Buy by the store rule, not by half boxes.

This page expects square feet and inches. Convert square meters to square feet and centimeters to inches first, then enter the converted values. Keep all measurements in the same unit system.

The calculator adds your waste percent before dividing by tile area, then rounds up to a whole tile. That extra count is meant to cover cuts, breakage, and small layout surprises.

No. The calculator runs in your browser tab. Your recent answers stay only on the page while you use it, and they are not sent to a server.