How to Estimate Materials for Home Projects
Stop guessing and over-buying — how to estimate paint, tiles, concrete, flooring and bricks for a home project, measure tricky rooms, and add the wastage allowance the pros always include.
Tile Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Tiles needed
132
- Area per tile (sq ft)
- 1.000
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Tile Calculator
The Tile Calculator works out your tiles needed, along with 1 related figure in an instant. Enter area to tile, tile length and tile width and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the area to tile.
- Enter the tile length.
- Enter the tile width.
- Enter the wastage allowance.
- Read off your tiles needed, together with area per tile (sq ft) — the calculator updates automatically, with no button to press.
Worked example
For example, with area to tile of 120 sq ft, tile length of 12 in, tile width of 12 in and wastage allowance of 1%, the tiles needed is 132.
| Area to tile | 120 sq ft |
|---|---|
| Tile length | 12 in |
| Tile width | 12 in |
| Wastage allowance | 1% |
| Tiles needed | 132 |
|---|---|
| Area per tile (sq ft) | 1.000 |
Results are estimates for educational use, not professional advice.
Key terms explained
- Area
- The amount of two-dimensional space a shape covers, measured in square units.
Frequently asked questions
Divide the area by the area of one tile and add a wastage allowance. For 120 sq ft with 12×12 inch tiles and 10% wastage, you need about 132 tiles.
Cuts at edges, breakages and future repairs mean you should buy extra. 10% is typical for straight layouts; use 15% or more for diagonal or patterned designs.
Multiply the tile length by its width in inches and divide by 144 to get square feet. A 12×12 inch tile is exactly 1 square foot.
Yes. Tiles are sold as whole units and often in boxes, so the calculator rounds up to ensure you have enough.
Enter the area to tile. Enter the tile length. Enter the tile width. Enter the wastage allowance. Read off your tiles needed, together with area per tile (sq ft) — the calculator updates automatically, with no button to press.
Related guides
Tile Table: Tiles needed by Area to tile
Reference table of tiles needed for Tile across a range of area to tile values — exact, engine-computed figures you can read off at a glance.
How to Calculate Tile: Formula, Steps & Examples
Learn how to calculate Tile — the formula explained step by step, with worked examples and a free calculator to check your answer.