Tile Calculator: How Many Tiles?

Enter the floor or wall size in feet and the tile size in inches. Pick a layout: diagonal and herringbone patterns waste more tile on cuts. Add the square feet per box from the label to get a box count.

Width (ft) Length (ft) Tile width (in) Tile length (in) Layout Sq ft per box (optional) 0 to skip

Frequently asked questions

How much extra tile should I buy?

10% for a straight layout, 15% for diagonal and up to 20% for herringbone or rooms with many corners.

How many 12x12 tiles are in a square foot?

One. A 12 × 12 inch tile is exactly 1 sq ft. A 12 × 24 tile is 2 sq ft and a 6 × 6 tile is a quarter of a square foot.

Why buy spare tiles?

Tiles from later batches can differ in color. A few spares let you replace a cracked tile years later.

Developers: GET /api/tile-calculator returns JSON.