How much extra tile should I order?

Add 10% for straight layouts, 15% for diagonal, and up to 20% for intricate patterns or many cuts.

How many 12x12 tiles in a square foot?

Exactly one. A 12×12 inch tile covers one square foot, making the math simple.

Should I account for grout lines?

Grout lines slightly reduce tile count, but the waste allowance more than covers it — don't subtract them.

Tile Cost Calculator

Use the tile cost calculator below to get an instant material and installed price range for your project. To calculate tiles, find the area in square feet (length × width), divide by the area of one tile, then add 10–20% for cuts and breakage. A 10×8 ft floor with 12-inch tiles needs about 88 tiles including 10% waste, costing roughly $160–$1,200 in tile.

Your measurements

Area length(ft)

Area width(ft)

Tile width(in)

Tile height(in)

Waste allowance

Price per tile($)

Enter your measurements

Fill in the fields to see your estimate.

Tiles per 100 sq ft by size

Tile counts before waste. Add 10–20% for cuts.

Tile size	Tile area	Tiles per 100 ft²
12 × 12 in	1.00 ft²	100
18 × 18 in	2.25 ft²	~45
24 × 24 in	4.00 ft²	25
6 × 24 in (plank)	1.00 ft²	100
4 × 12 in (subway)	0.33 ft²	~300

What affects tile cost

Project size — larger flooring jobs lower the cost per unit but raise the total.
Material grade — premium products cost more but often last longer.
Labor rates — local wages and demand swing installed prices significantly.
Region — prices vary by state and metro (see local cost pages below).
Site access & prep — removal of old material and difficult access add cost.
Season — booking in the off-season can cut labor pricing.