Tile Calculator
Estimate tiles, boxes and total square footage with waste factored in.
How the tile calculator works
Divide the total floor area by the coverage of a single tile (tile width × height ÷ 144 for inches to ft²). Add a 10% waste factor for cuts, and divide by tiles-per-box to get boxes.
Formula: tiles = (area ÷ tile ft²) × (1 + waste%)
Popular uses for the tile calculator
Tile for a Bathroom Floor
Estimate tiles and boxes for any bathroom floor.
Tile for Shower Walls
Estimate tiles for a full shower surround.
Tile for a Kitchen Backsplash
Estimate tile and boxes for a kitchen backsplash.
Tile for a Kitchen Floor
Estimate tile and boxes for a kitchen floor.
Tile for a Laundry Room
Estimate tile and boxes for a laundry room floor.
Frequently asked questions
How much extra tile should I order?
10% for straight lay, 15% for diagonal or herringbone, 20% for complex patterns. Order attic stock to keep for repairs.
How many 12×12 tiles in a box?
Typically 10–15 per box, but always check the box label — coverage varies by manufacturer.
Related calculators
All calculators