Tile Calculator – Tiles Needed for a Floor
Free tile calculator: enter floor and tile dimensions to estimate how many tiles you need. Includes waste for cuts. No sign-up, runs in your browser.
Tile Calculator
Estimate tiles needed for a floor. Enter floor dimensions in feet and tile size in inches (e.g. 12×12).
How the tile calculator works
tiles = (floor_area ÷ tile_area) × (1 + waste%)
Floor area in sq ft; tile area from length × width (inches converted to sq ft). Result is rounded up to whole tiles.
Estimating tiles for floors and walls
Tiling a floor or wall requires knowing how many tiles to buy. Too few and you risk running out mid-project or getting a different dye lot. Too many and you waste money. A tile calculator uses the area to cover and the size of each tile to estimate the number needed, plus a waste factor for cuts at edges and corners.
Measure the floor or wall in feet. Common tile sizes: 12×12, 18×18, 6×24, 12×24 inches. Enter dimensions in the units shown. The calculator converts tile size to square feet and divides the total area. A 10% waste factor is typical for straightforward layouts; diagonal or patterned installs need 15–20% or more. Grout and adhesive are separate; check coverage on the product.
For irregular rooms, break the area into rectangles, calculate each, and add. Use our area calculator to find total area first. For related projects, try the paint calculator for walls, the concrete calculator for subfloors, or the brick calculator for feature walls.