Tile Calculator
Tiles needed for a room including 10% waste.
Tiles needed for a room including 10% waste.
Calculate concrete, rebar, paint, tiles and air-conditioning capacity.
Slab volume in cubic meters and approximate weight.
Open calculatorEstimate steel bar weight from diameter, length, quantity and steel density.
Open calculatorLiters needed from wall area, coats and coverage.
Open calculatorTiles needed for a room including 10% waste.
Estimate room cooling capacity from area and an adjustable cooling-load rate.
Open calculatorThe tile calculator estimates the number of square tiles needed for a rectangular floor or wall. It calculates the surface area, calculates the area of one square tile from its side length and applies a fixed 10% waste allowance before rounding up to a whole tile.
Enter the surface length and width in meters and the side length of one square tile in centimeters. The calculator converts the tile side to meters, squares it to obtain tile area, divides total surface area by tile area, multiplies by 1.10 and rounds upward.
The current calculator assumes square tiles because it accepts one tile-side dimension. The 10% waste factor is built into the formula. It does not separately model grout-joint width, pattern layout, borders or different rectangular tile dimensions.
For a 5 m × 4 m surface using 60 cm square tiles, surface area is 20 m² and each tile covers 0.36 m². 20 ÷ 0.36 × 1.10 = 61.11, so the calculator rounds up to 62 tiles.
Use the result as a planning estimate. Diagonal patterns, complex room shapes, breakage, batch matching and large numbers of edge cuts may require a different project-specific allowance.
The implemented formula includes a fixed 10% allowance before rounding. Actual waste can be higher or lower depending on layout and cuts.
This calculator currently uses one tile-side field and therefore models square tiles.
No. Tile count is based on nominal tile dimensions and a fixed 10% allowance, without separately subtracting grout-joint area.
These sources are used to verify terminology, formulas, and information related to this calculator.