🔲 Tile Calculator
Enter the area to tile and the tile size in inches. You get the number of tiles with waste, and boxes if you know how many come in a box.
How the Tile Calculator works
The area is divided by the area of one tile (converted to square feet). Grout lines are small enough to ignore for an estimate. Add 10% waste for cuts, more for small rooms or diagonal layouts.
Step-by-step calculation
- 1Measure the area.
- 2Find one tile's area.
- 3Divide and add waste.
Worked example
A 10 × 8 ft floor (80 ft²) with 12 × 12 inch tiles needs 80 tiles, or 88 with 10% waste — 9 boxes of 10.
Tile Calculator examples
| Area length (ft) | Tiles needed |
|---|---|
| 5 | 44 tiles |
| 8 | 71 tiles |
| 10 | 88 tiles |
| 13 | 115 tiles |
| 15 | 132 tiles |
Other inputs kept at the calculator's default values. Results calculated by this calculator.
Why use a Tile Calculator?
Order the right number of tiles and boxes.
Important factors that can affect your results
- Tile size and grout width.
- Cuts around edges.
- Pattern layout.
Frequently asked questions
How much extra tile should I buy?
Usually 10%; 15% for diagonal patterns or many cuts.
Do grout lines matter?
Slightly — they mean you need a bit fewer tiles, which acts as extra safety margin.
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Last reviewed November 2026 · How we build and check our tools · Report a problem