Tile Backer Board Calculator
Estimate tile backer-board sheets, fasteners, fastener boxes, purchased coverage and material cost for a tiled floor or wall area.
Default project preview
11 boards
Net surface area
150 ft²
Order area
165 ft²
Coverage per board
15 ft²
Estimated fasteners
605
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.
Surface length
Enter this project assumption in ft. The current imperial default is 15 ft.
Surface width
Enter this project assumption in ft. The current imperial default is 10 ft.
Opening deductions
Enter this project assumption in ft². The current imperial default is 0 ft². Minimum: 0.
Cutting allowance
Enter this project assumption in %. The current imperial default is 10 %. Minimum: 0. Maximum: 40.
Board length
Enter this project assumption in ft. The current imperial default is 5 ft.
Board width
Enter this project assumption in ft. The current imperial default is 3 ft.
Fasteners per board
Enter this project assumption in fasteners. The current imperial default is 55 fasteners. Minimum: 1.
Fasteners per box
Enter this project assumption in fasteners. The current imperial default is 200 fasteners. Minimum: 1.
Price per board
Enter this project assumption in per board. The current imperial default is 14 per board. Minimum: 0.
Price per fastener box
Enter this project assumption in per box. The current imperial default is 18 per box. Minimum: 0.
How to read the outputs
Net surface area
after opening deductions. Default preview: 150 ft².
Order area
10% cutting allowance. Default preview: 165 ft².
Coverage per board
entered board size. Default preview: 15 ft².
Estimated fasteners
55 per board. Default preview: 605.
Fastener boxes
200 per box. Default preview: 4.
Material allowance
boards and fastener boxes. Default preview: $226.00.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Order area = (surface area − openings) × waste factor. Boards = round up (order area ÷ board area). Fasteners are estimated from the entered quantity per board.
FAQ
Tile Backer Board Calculator questions
Should backer-board seams align with tile joints?+
Layout requirements depend on the selected board and tile assembly. Follow the product installation instructions.
Does this include thinset or seam tape?+
No. The result covers boards and an editable fastener allowance only.
Why add cutting waste?+
Perimeter cuts, staggered joints, openings and damaged sheets can increase board use.