Tile Calculator
Calculate the number of tiles required for floors, walls, bathrooms, kitchens, patios, and construction projects.
Tile Calculation Formula
The number of tiles required depends on the total area that needs to be covered and the area of one tile.
Floor Area = Length × Width
Tile Area = Tile Length × Tile Width
Tiles Needed = Floor Area ÷ Tile Area
The calculator automatically converts the entered floor and tile measurements into a common unit before calculating the required tile quantity.
The final tile requirement is rounded up because tiles are normally purchased as complete pieces.
An additional 10% is recommended to account for cutting, breakage, installation waste, pattern matching, and future replacement needs.
How To Use This Tile Calculator
1. Select the measurement unit for the floor or wall area.
2. Select the measurement unit for the tile dimensions.
3. Enter the floor length.
4. Enter the floor width.
5. Enter the length of one tile.
6. Enter the width of one tile.
7. Click Calculate Tiles to calculate the required quantity.
8. Review the basic requirement and recommended quantity with 10% extra.
9. Download the PDF report if you need a record of the calculation.
Example Tile Calculation
Suppose a room is 20 ft long and 15 ft wide, and each tile measures 2 ft × 2 ft.
Floor Area
20 × 15 = 300 ft²
Tile Area
2 × 2 = 4 ft²
Tiles Required
300 ÷ 4 = 75 tiles
Recommended With 10% Extra
75 × 1.10 = 83 tiles
Therefore, approximately 75 tiles are required to cover the calculated area. Purchasing around 83 tiles provides additional coverage for cutting, breakage, and installation waste.
Common Tile Calculation Examples
The following examples show how different floor areas and tile sizes affect the total number of tiles required.
100 ft² Area
With 1 × 1 ft tiles: 100 tiles
200 ft² Area
With 2 × 2 ft tiles: 50 tiles
300 ft² Area
With 2 × 2 ft tiles: 75 tiles
500 ft² Area
With 1 × 2 ft tiles: 250 tiles
1,000 ft² Area
With 2 × 2 ft tiles: 250 tiles
These examples assume a simple rectangular area and do not account for complex layouts, diagonal installation, unusual room shapes, or additional pattern matching.
Common Tile Sizes
Tiles are available in many sizes depending on the room, design, installation method, and type of project.
12 × 12 inch
Common square tile size for residential flooring.
12 × 24 inch
Popular rectangular format for floors and walls.
24 × 24 inch
Large square format suitable for larger rooms.
24 × 48 inch
Large-format tile used for modern flooring and wall applications.
Mosaic Tiles
Small tiles commonly used for decorative areas and backsplashes.
Large-Format Porcelain
Large tiles designed for spacious modern surfaces.
Always check the actual dimensions printed on the tile packaging before purchasing materials because nominal tile sizes can vary between manufacturers.
Tile Wastage and Extra Tiles
Buying a small quantity of extra tiles can help avoid problems during installation and future repairs.
Straight Installation
A basic rectangular layout may require around 5% to 10% extra material depending on the project.
Complex Patterns
Diagonal layouts, complicated patterns, and rooms with many corners can require more extra tiles.
Future Repairs
Keeping a few spare tiles can be useful if a tile becomes damaged after installation.
This calculator uses approximately 10% extra as a general planning allowance. Actual wastage depends on the layout, tile size, installation pattern, and skill of the installer.
Why Use This Tile Calculator?
This tile calculator helps homeowners, contractors, builders, architects, interior designers, and construction professionals estimate the number of tiles required for a project.
Accurate tile estimation can help reduce unnecessary material purchases, minimize waste, and improve project planning.
The calculator supports different measurement units for the floor and tile dimensions, making it useful when floor measurements and tile dimensions are provided in different units.
The calculator also provides a recommended quantity with approximately 10% extra tiles for cutting, breakage, installation waste, and future replacement needs.
For irregular rooms, diagonal patterns, complex layouts, or professional construction projects, additional planning may be required.
Frequently Asked Questions
What is a tile calculator?
A tile calculator estimates the number of tiles required to cover a floor, wall, bathroom, kitchen, patio, or other tiled area based on the dimensions provided.
How do I calculate how many tiles I need?
First calculate the total area by multiplying the length by the width. Then calculate the area of one tile and divide the total area by the single tile area. The result is rounded up because tiles are normally purchased as whole pieces.
Why should I buy extra tiles?
Extra tiles help cover cutting waste, accidental breakage, installation mistakes, pattern matching, and future repairs. Around 10% extra is commonly used as a basic planning allowance, although actual requirements can vary by project.
Can I use this calculator for wall tiles?
Yes. The same area-based formula can be used for walls. Enter the wall length and height as the area dimensions, then enter the length and width of one tile.
Which measurement units are supported?
The calculator supports feet, meters, centimeters, and inches for tile measurements. Floor dimensions can be entered in feet, meters, or centimeters, while tile dimensions can be entered in inches, feet, centimeters, or meters.
Can I use different units for the floor and tiles?
Yes. You can select a separate unit for the floor dimensions and tile dimensions. The calculator converts both measurements to a common unit before calculating the tile quantity.
Does this calculator include tile wastage?
Yes. The calculator provides the basic tile requirement and also recommends approximately 10% extra tiles for cutting, breakage, installation waste, and future repairs.
Can I download my calculation?
Yes. After calculating the tile quantity, you can download a PDF report containing the floor dimensions, tile dimensions, calculated areas, tile requirement, and recommended quantity.
Is this Tile Calculator free?
Yes. The CalHub Tile Calculator is free to use online. You can calculate tile requirements without creating an account or installing additional software.
How accurate is the tile calculation?
The calculator provides a mathematical estimate based on the dimensions you enter. Actual tile requirements can vary because of room shape, cutting patterns, grout spacing, installation methods, and material breakage.
Should I keep spare tiles after installation?
Keeping a few spare tiles can be useful for future repairs. Matching the exact tile later may be difficult if the manufacturer, color, finish, or tile design is discontinued.
Tile Calculation Tips
• Measure the floor or wall area carefully before purchasing tiles.
• Check the actual dimensions of the tile rather than relying only on the nominal size.
• Make sure measurements are entered using the correct units.
• Purchase additional tiles when the installation includes cutting, patterns, corners, or unusual room shapes.
• Keep some spare tiles for possible future repairs.