FREE TILE CALCULATOR
Calculate How Many Tiles You Need
Estimate tile quantity, square footage, boxes, waste and material cost for floors, walls, backsplashes and other tile projects.
Tile Calculator
Enter your project area and tile dimensions to get an estimate.
10% is a common starting allowance.
Tile Details
Use the same unit selected above.
Enter the manufacturer's coverage in square feet.
Optional Cost
Leave blank if you only need quantity.
Area—
Area With Waste—
Tiles Needed—
Boxes Needed—
Coverage / Box—
Estimated Cost—
This is a planning estimate. Actual tile requirements depend on layout, cuts, grout joints, product packaging and installation recommendations.
How to Use the Tile Calculator
This tile calculator helps estimate how many tiles and boxes you need for a flooring, wall, bathroom, backsplash or other rectangular tile area.
1. Measure the area
Measure the length and width of the area you want to tile. For an irregular project, divide it into smaller rectangles and calculate each section separately.
2. Enter your tile size
Measure one tile or use the dimensions printed on the product packaging. Keep the tile dimensions in the same unit selected for the project area.
3. Add waste
Tile projects need extra material for cuts, breakage and future repairs. Around 10% is a common starting point, while diagonal patterns, borders and irregular layouts may require more.
4. Check box coverage
If the manufacturer lists square feet per box, use that figure for the most direct box estimate. The calculator rounds boxes up because tile is normally sold in whole boxes.
Area = Length × Width
Purchase Area = Area × (1 + Waste ÷ 100)
Tiles Needed = Purchase Area ÷ Tile Area
Example
A 12 ft × 10 ft room contains 120 square feet. With 10% waste, plan for 132 square feet. If one box covers 10 square feet, the estimate is 13.2 boxes, so you should plan for 14 boxes.
Tile measurement tips
- Measure each separate room or section instead of relying on one approximate measurement.
- Double-check measurements before ordering.
- Confirm the manufacturer's stated coverage per box.
- Keep leftover tiles when possible for future repairs.
- Ask the installer about waste for your chosen layout and pattern.
Tile Buying Checklist
Before ordering
- Confirm tile size and actual usable coverage.
- Check the number of tiles or square feet in each box.
- Consider the installation pattern and cutting requirements.
- Round your final box quantity upward.
- Keep a few spare tiles if storage space allows.
Floor, wall or backsplash?
The same area calculation works for many rectangular tile surfaces. For walls, use wall length × wall height rather than floor length × floor width.
Important limitation
This calculator provides an estimate and does not replace product-specific installation instructions or professional measurement.
Tile Calculator FAQs
How many tiles do I need?
Calculate the area, add waste, divide by the area covered by one tile or one box, and round the result up.
How much extra tile should I buy?
Around 10% is a common starting allowance for cuts and breakage. Complex layouts may require more.
How do I calculate tile square footage?
For a rectangular area, multiply length by width. If both measurements are in feet, the result is square feet.
Should I round up tile boxes?
Yes. Because tile is usually sold in whole boxes, round the calculated box quantity up to the next whole box.