Flooring & Tile
Tile Calculator
Estimate tiles needed for a floor or wall area, including tile size, waste factor, and optional user-entered tile cost.
Flooring & Tile
Calculator inputs
Tile Calculator Results
Results update in your browser as you edit inputs. They are planning estimates, not complete shopping lists.
Enter project dimensions to calculate material quantity.
Assumptions
- Tile size uses the visible face size, not box coverage.
- If your tile is sold by the box, divide the tile count by the tiles per box or box coverage and round up.
- Grout width, trim pieces, patterns, and border cuts are not modeled separately.
- The calculator rounds up to whole tiles.
- Any cost estimate uses only the unit price you enter. No store or local price data is used.
Formula
- Project area = known area, or room length x room width.
- Tile area = tile width x tile height converted to square feet.
- Tiles needed = ceil(project area / tile area).
- Tiles including waste = ceil(tiles needed x (1 + waste factor)).
Example calculation
Example: 10 x 10 room
A 100 sq ft room using 12 in by 12 in tile needs 100 tiles before waste and 110 tiles with 10% waste.
Common mistakes
- Mixing inches and feet when entering tile dimensions.
- Skipping waste for diagonal layouts or rooms with many cuts.
- Using the calculator for tile setting materials such as mortar or grout.
FAQ
Should I enter floor area or room dimensions?
Either works. If known area is entered, it is used first. Otherwise the calculator uses length times width.
Does this include grout?
No. This calculator estimates tile quantity only.