HHelmoa

Tile calculator

Count tiles for a floor, shower or backsplash, including cuts and breakage.

Tile Calculator
Tiles needed88
Boxes9
Area (sq ft)80

How it works

  1. Area in square inches = length × width × 144.
  2. Divide by one tile's area (tile width × length in inches).
  3. Add 10% waste (15% for diagonal layouts or small rooms) and round up.

Example: A 10 × 8 ft floor with 12 × 12 in tiles and 10% waste needs 88 tiles.

Frequently asked questions

How much extra tile should I buy?

10% for straight layouts, 15% for diagonal, herringbone or rooms with many cuts.

Does grout width matter?

Only slightly for large tiles; it matters more for mosaics. The waste allowance covers it.

Related guides

More free calculators

See all calculators →