Tile calculator
Enter the area, the tile size, the grout joint and the waste allowance. The calculator tells you how many tiles and how many boxes to buy, for floors, walls and backsplashes.
See your design as an AI render — free- Boxes
- 9
- Area bought
- 87 sq ft
- Tiles without waste
- 78.4
Area to tile: 80 sq ft. Check the number of tiles per box on the packaging.
See the room with the new tile
Upload a photo of the room and RendScene returns a render with the tile and style you choose.
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How to calculate tiles
Divide the area by the space each tile takes up with its joint, then add waste for cuts.
- 1
Work out the area
Length × width: a 10 × 8 ft floor is 80 sq ft.
- 2
Add the joint to the tile
A 12 × 12 in tile with a 1/8 in joint takes up 12.125 × 12.125 in, or 1.02 sq ft. 80 ÷ 1.02 = 78.4 tiles.
- 3
Add waste and round up
With 10% waste: 78.4 × 1.1 = 86.2, so 87 tiles.
- 4
Turn tiles into boxes
With 10 tiles per box, 87 ÷ 10 = 8.7, so 9 boxes.
Tiles per area
With a 1/8 in (3 mm) joint, and 10% waste in the last column.
| Tile | Tiles per sq ft | For 100 sq ft with 10% waste |
|---|---|---|
| 4 × 4 in | 8.46 | 931 |
| 6 × 6 in | 3.84 | 423 |
| 12 × 12 in | 0.98 | 108 |
| 12 × 24 in | 0.49 | 55 |
| 18 × 18 in | 0.44 | 49 |
| 24 × 24 in | 0.25 | 28 |
Frequently asked questions
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From drawing to render in minutes
Upload a floor plan, a sketch or a screenshot of your 3D model and get a photorealistic image that stays faithful to what you drew.
No credit card required