Home › Tile Calculator

Tile Calculator

Find how many floor or wall tiles you need from the area, tile size and grout joint, with waste and boxes.

Area to tile (ft²)

Tile length (in)

Tile width (in)

Grout joint (in)

Waste (%)

Tiles per box

How to use it

Enter the area in square feet.
Enter the tile size and grout joint width.
Add 10% waste (15% for diagonal layouts or small rooms).
Read tiles and boxes needed.

How it works

Each tile occupies (length + joint) × (width + joint) square inches. Tiles = area × 144 ÷ that footprint, plus waste, rounded up.

FAQ

How many 12 × 24 tiles in 100 square feet?

About 50 tiles before waste, 55 with 10% waste (with a 1/8 in joint).

What grout joint should I use?

Rectified porcelain often uses 1/16-1/8 in; non-rectified tiles 3/16 in or more - follow the tile maker's guidance.

Related calculators

X Facebook Reddit WhatsApp LinkedIn

Embed this free calculator on your site (copy & paste):

<iframe src="https://buildtally.pages.dev/tile-calculator/?embed=1" width="100%" height="640" style="border:1px solid #ddd;border-radius:12px" loading="lazy" title="BuildTally calculator"></iframe><p style="font-size:13px">Calculator by <a href="https://buildtally.pages.dev/tile-calculator/">BuildTally</a></p>

Free calculator by BuildTally