Tile Calculator
Interior · Updated July 2026
Enter the area you're tiling and your tile dimensions to find how many tiles you need — including a waste allowance for cuts and breakage.
Your project
Results
Estimates only. Add extra for waste and confirm with your supplier.
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How many tiles do I need?
Divide the area to cover by the area of one tile, then add 10–15% for cuts and breakage. Always round up to full boxes.
How many tiles to buy
Divide the area you're tiling by the coverage of one tile, then add waste: 10% for straight layouts and 15–20% for diagonal or patterned installs. Always round up to full boxes.
Keep spare tiles
Order a few extra tiles from the same lot number so future repairs match — dye lots vary between production runs. Don't forget thinset and grout, sized to your tile and joint width.
How to use this calculator
- 1Measure the area you plan to tile in square feet.
- 2Enter your tile's width and length in inches.
- 3Set a waste allowance and read the tile count.
Frequently asked questions
How much extra tile should I buy?
Add 10% for straight layouts and 15–20% for diagonal or patterned layouts to cover cuts and future repairs.
How much extra tile should I buy?
Add 10% for straight layouts and 15–20% for diagonal or patterned installs, plus a few spares for repairs.
How do I calculate how many tiles I need?
Divide the area by the coverage of one tile, add waste, and round up to full boxes.
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