Tile Calculator
Calculate tiles needed for your project
Enter Room & Tile Dimensions
Room Dimensions (feet)
Tile Dimensions (inches)
Typically 10-15% for standard installations
Tile Estimate
About This Calculator
The Tile Calculator helps you estimate the number of tiles needed for your flooring or wall tiling project. It calculates the area to be covered, accounts for tile size, and includes a waste factor to ensure you order enough tiles.
This tool is essential for homeowners, contractors, and DIY enthusiasts planning tile installation projects. The calculator accounts for room dimensions, tile size, and includes a waste factor for cuts and breakage.
Formula & Calculation Method
Tile calculations use the following formulas:
- Room Area: Length × Width (in square feet)
- Tile Area: (Tile Length / 12) × (Tile Width / 12) (in square feet)
- Tiles Needed: Room Area / Tile Area
- Total Tiles (with waste): Tiles Needed × (1 + Waste%)
- Tiles to Buy: Round up Total Tiles to whole number
Where:
- Room dimensions are in feet
- Tile dimensions are in inches (converted to feet)
- Waste factor accounts for cuts, breakage, and mistakes (typically 10-15%)
How to Use This Calculator
Frequently Asked Questions
How much waste should I account for?
Typically 10-15% waste is recommended for standard rectangular rooms. For complex layouts, diagonal patterns, or rooms with many corners, you may need 15-20% waste.
Do I need to account for grout lines?
The calculator provides a basic estimate. For precise calculations, you may want to account for grout line spacing, which slightly reduces the effective tile coverage area.
What if my tiles are in different units?
The calculator expects room dimensions in feet and tile dimensions in inches. If your tiles are in centimeters or other units, convert them to inches first (1 inch = 2.54 cm).
Should I buy extra tiles?
Yes, always buy 10-15% more tiles than calculated. This accounts for cuts, breakage, future repairs, and ensures you have matching tiles if some are damaged during installation.
Calculator by
NumCalculators Editorial Team
Multi-disciplinary Expert Team