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Tile calculator: tiles and boxes for a floor or wall
The short answer
Divide the area by the area of one tile, then add waste. A 10 by 8 foot floor is 80 square feet. With 10% waste and 12 by 12 inch tile, that’s 88 tiles, or 9 boxes at 10 square feet each. Allow more for diagonal layouts and lots of cuts: one tile maker recommends at least 20%.
Enter the area, the tile and how much it comes with per box. You’ll get tiles and boxes to buy, and a price if you’re quoting the job.
Tile you need
88 tiles
80 square feet, 88 with waste.
- Boxes to buy
- 9
- Square feet to buy
- 88
- Each tile covers
- 1 sq ft
Price for this job
- Materials (9 × $40.00)
- $360.00
- Labor
- $0.00
- Markup
- $72.00
- Price to quote
- $432.00
How it works
Tile area in square feet = length (in) × width (in) ÷ 144. Tiles = area with waste ÷ tile area. Boxes = area with waste ÷ square feet per box, rounded up.
| Tile size | Square feet each | Tiles |
|---|---|---|
| 6 × 6 in | 0.25 | 441 |
| 12 × 12 in | 1 | 111 |
| 12 × 24 in | 2 | 56 |
| 18 × 18 in | 2.25 | 49 |
| 24 × 24 in | 4 | 28 |
How much extra to order
It depends on the layout, the room and the tile. The calculator starts at 10% as a place to begin. Artistic Tile recommends (opens in a new tab) a minimum of 20% for its products. Keep a few spare for later repairs, because the same lot can be hard to find again.
Common questions
How do I calculate how many tiles I need?
How much extra tile should I buy?
How many 12 by 24 tiles do I need for 100 square feet?
Does the grout line change the count?
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Estimate template
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