Tile Count and Grout Volume
Tile count with waste and grout cubic-inch estimate.
Example
You enter
- Area (ft²) 100
- Tile width (in) 12
- Tile height (in) 12
You get
- Base count 100
- Tile count (with 10% waste) 110
- Tile face (in²) 144
- Grout volume 75 in^3
No published worked example is on file for this calculation. It is checked against a hand-worked derivation of its method and an independent reference test.
Details, formula, and sources
Formula or tableTile count = ceil(area x 144 / (w x h)) + ceil(base x 10%). Grout volume = tiles x (w + h) x joint width x tile thickness.
Source and editionTCNA Handbook by name; ANSI A108 / A118 setting standards by name.
Free accessTCNA Handbook licensed; ANSI standards licensed; principles free in trade references.
What governsEstimate. AHJ and licensed professional govern.
API field namesarea_ft2, tile_width_in, tile_height_in, base_count, tile_count, tile_face_in2, grout_volume_in3
- Default waste factor 10% (straight set; no diagonal option)TCNA Handbook typical