Tile Calculator and Cost Estimator – Plan a Floor, Wall, or Backsplash

Tile adds beauty to any kitchen or bathroom and is both affordable and durable. Calculate the tile material needed for your floor, wall, or backsplash project by entering your project dimensions. Estimate the cost of materials by entering the price per below.

Floor / Wall Dimensions
Tile Size
Optionally enter the price per tile

Material Estimate:

  Tiles Needed
Material Cost
Estimated Price
Total Area
  Square Feet

Using the Tile Calculator to Estimate Floor and Wall Projects

Find the amount of tile you need for your kitchen or bathroom project by entering your floor, wall, or backsplash size along with the size of the tile and the calculator will estimate the material needed. Calculate each wall separately for projects that have more than one wall. You can also enter the price per, and the calculator can calculate a material cost. For example, for a 10’x10′ room, you will need 57 16″x16″ tiles. We recommend getting project estimates from local tile installation professionals to see just how much material you’ll need and assess labor costs.

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Estimate the amount of floor tile needed by measuring the room square footage and dividing by the square footage of the tile being installed

How Many Tiles Do You Need For a Floor, Wall, or Backsplash?

The first step in finding how many tiles you need for a floor, wall, or backsplash project is to measure the area of the project and find the square footage. Easily find the project square footage using our square footage calculator. Square footage can be found by multiplying the width by the length of the floor or wall in feet.

The next step is to find the the square footage of tile you want to use. Assuming the size is 12″ x 12″, multiply 12×12 and then divide 144 by the answer, eg. 144/(12*12) = 1.0. That means you need one tile per square foot, which makes sense since 12″ x 12″ is 1 square foot.

After you have found the square footage of both the project and the tile, determining how many you need is as simple as dividing the project square footage by the tile square footage, ie. (project ft2) / (tile ft2). Pro installers often recommend adding 5%-10% additional material to account for some padding in measuring, broken pieces, and off-cuts.

Estimating Tile Patterns

Kitchen and bath tile is often installed in a pattern using different sizes. To estimate the amount of tile needed you can find the square footage of the repeating pattern and then estimate how many instances of that pattern are needed, then multiply by the number needed to create the pattern. For instance, if your pattern requires one 8″x12″ and one 6″x8″ then add the square footage of both tiles together to find the square footage of the pattern. Then divide the floor ft2 by the tile ft2.

Some layout patterns that use the same size tiles may also influence how much material will be required since there will be varying amounts of cuts and waste when using different layouts. While some patterns result in more waste than others, a good rule of thumb is when installing tile at an angle, consider ordering 20% additional material to account for more cuts and waste.

Estimating Thinset or Mastic for a Tile Project

Choose thinset or mastic depending on your tiling application. You will likely want to use thinset for most flooring applications while you’ll probably choose mastic when doing wall tile. Calculating how much thinset or mastic you need requires choosing a trowel size for your project. Larger and smaller notch trowels require more or less thinset. Different thinset and mastic products will cover different amounts, and most will have a coverage chart on the bag indicating how many square feet the product covers for your trowel. If you don’t have access to the coverage chart, you can learn how to how to estimate thinset material.

Other Materials Needed

In addition to tile and thinset, you’ll need some additional material for your project. First is a solid backer board to properly support the surface and prevent cracking. This can be found in 3′ x 5′ sheets at your local home center and comes in 1/4″ and 1/2″ thicknesses. We also recommend getting some good shims to set an even spacing between each tile. You’ll also need to get grout, which is available in sanded and unsanded varieties. Choose unsanded grout if your spacing is 1/8″ or less.

Common Tile Sizes

Common tile sizes for flooring and wall applications in inches and centimeters and the number needed to cover a 100 ft2 area
Tile Size in Inches Tile Size in Centimeters Tiles per 100 ft2
4″ x 4″ 10cm x 10cm 900
3″ x 6″ 7.5cm x 15cm 800
6″ x 6″ 15cm x 15cm 400
4″ x 24″ 10cm x 61cm 150
12″ x 12″ 30cm x 30cm 100
16″ x 16″ 41cm x 41cm 57
18″ x 18″ 46cm x 46cm 45
18″ x 24″ 46cm x 61cm 34

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