Tile Calculator — Free 2026
Calculate exactly how many tiles you need for any floor or wall project. Choose from standard sizes or enter a custom tile dimension.
How It Works
- Enter room dimensions
- Select tile size and waste
- Read your results
How to Calculate Tiles for Your Project
Ordering the right amount of tile is critical for any flooring or wall project. Too few tiles mean delays and potentially mismatched dye lots. Too many tiles waste money and storage space. This calculator takes the guesswork out of tile estimation by computing exact quantities with waste allowance built in.
Understanding Tile Sizes and Coverage
Tile sizes are specified in inches but rooms are measured in feet. A 12x12 inch tile covers exactly 1 square foot. An 18x18 inch tile covers 2.25 square feet, and a 24x24 inch tile covers 4 square feet. This calculator handles the conversion automatically. For precise room measurements, use our square footage calculator to determine the exact area first.
Why Waste Allowance Matters
Every tiling project involves cuts along walls, around fixtures, and at transitions. The standard 10% waste allowance covers typical straight-lay installations. Diagonal patterns increase waste to 15%, and intricate patterns like herringbone or chevron may require 20% extra. The waste percentage also accounts for the occasional broken tile during cutting and handling. For complementary project estimates, try our paint calculator to plan your walls alongside your floors.
Ordering Tips
Always round up to the nearest full box when ordering tiles. Keep at least one extra box in storage for future repairs — tile patterns and dye lots change frequently, making exact matches difficult later. Check the box label for exact coverage in square feet, as the number of tiles per box varies by manufacturer and tile size.
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