Tile Layout Calculator
Plan a rectangular tile layout with grout joints, full rows and columns, edge cuts, waste-adjusted tile quantity, boxes and purchase cost.
Default project preview
68 tiles
Full boxes
9
Layout tiles
60
Perimeter cut positions
28
Purchased tiles
72
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Input and output guide
What each value means
The labels and units below are part of this calculator’s visible methodology. Replace every default with measurements or product data from the actual project.
Room length
Enter this project assumption in ft. The current imperial default is 12 ft.
Room width
Enter this project assumption in ft. The current imperial default is 10 ft.
Tile length
Enter this project assumption in in. The current imperial default is 24 in.
Tile width
Enter this project assumption in in. The current imperial default is 12 in.
Grout-joint width
Enter this project assumption in in. The current imperial default is 0.125 in.
Cut and waste allowance
Enter this project assumption in %. The current imperial default is 10 %. Minimum: 0. Maximum: 50.
Tiles per box
Enter this project assumption in a unitless value. The current imperial default is 8.
Price per box
Enter this project assumption in a unitless value. The current imperial default is 36. Minimum: 0.
How to read the outputs
Full boxes
8 tiles each. Default preview: 9.
Layout tiles
rows multiplied by columns. Default preview: 60.
Perimeter cut positions
approximate edge locations. Default preview: 28.
Purchased tiles
full boxes. Default preview: 72.
Purchased coverage
nominal tile faces. Default preview: 144 ft².
Tile cost
rounded boxes. Default preview: $324.00.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Columns = round up ((room length + joint) ÷ (tile length + joint)). Rows use the same method. Tile order applies the waste allowance and boxes round up.
Reviewed project guidance
How to use this estimate in a real project
Last reviewed: July 30, 2026
Lay out rows and columns from room dimensions, actual tile size and joint width so edge cuts and centered layout can be reviewed before installation.
Calculation steps
- 1Enter the actual project dimensions or operating values.
- 2Apply the calculator formula using consistent units.
- 3Review the unrounded result and the editable allowance.
- 4Round only to the product, stock length or equipment increment actually purchased.
Worked numerical example
A 10 ft × 8 ft floor using 12 in tiles with 1/8 in joints produces about 9 full modules across the 10 ft direction; centering the remainder avoids a narrow cut at one wall.
Purchasing and rounding
Use the layout result to dry-plan full tiles and edge cuts before ordering. Purchase tile from total net area plus a waste allowance appropriate to the pattern and room geometry; layout calculations determine cut positions, while cartons must be rounded separately using the exact coverage per box.
Interpret the result
The row and column result describes module placement using tile size plus joint width. It is primarily a layout check: centered borders, movement joints, pattern repeats and out-of-square walls can change cut sizes without changing the room's nominal area.
Page-specific assumptions
- Inputs describe one consistent project condition.
- Entered yields and efficiencies match the selected product or equipment.
- Site-specific code and engineering requirements are checked separately.
Common mistakes
- Mixing imperial and metric inputs.
- Using nominal dimensions where actual coverage controls.
- Rounding intermediate values too early.
- Treating a quantity estimate as design approval.
Primary and technical references
BuildMeter provides planning estimates, not engineering, architectural, electrical, mechanical, plumbing, permit or code approval. Review the methodology and verify final decisions with product documentation and qualified professionals.
FAQ
Tile Layout Calculator questions
Why can layout tiles exceed area-based tiles?+
Rows and columns include edge cuts, while pure area assumes offcuts can always be reused perfectly.
Does grout-joint width change the number of tiles?+
It can change the number of rows or columns when the room dimension is close to a full repeated module.
Does this support diagonal or herringbone layouts?+
No. Those patterns usually need more waste and a project-specific layout.