How to use this tile calculator
Enter the requested values above and select Calculate. The result updates immediately on the page, so you can change one value and compare different scenarios without leaving the calculator.
Formula and method
Example
A 12×12 inch tile covers 1 square foot, so 120 sq ft with 10% waste needs about 132 tiles.
What this calculator is useful for
Estimate the number of rectangular tiles needed for a floor or wall area, including waste. It is designed for quick estimates and everyday problem solving. When a calculation affects a contract, tax filing, medical decision or other high-stakes situation, verify the result with the appropriate professional or authoritative source.
Frequently asked questions
What does the Tile Calculator calculate?
Estimate the number of rectangular tiles needed for a floor or wall area, including waste.
How does the calculation work?
Tiles needed = surface area ÷ tile area, increased by waste, then rounded up.
Is this calculator free?
Yes. ERICH Calculators is free to use and no account is required.