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

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

How to Calculate Tiles Needed For a Floor, Wall, or Backsplash

Tile is a very popular option for flooring and backsplash projects because they are durable, easy to clean, and have endless design possibilities.

Because tiles come in so many sizes and installed patterns are infinitely variable, it can be more complicated to accurately estimate how much tiling you will need than for other floor and wall coverings.

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Calculate Tile Area

The first step is to know how large of an area you want to cover. Since most material and many work estimates are given in square feet, use that unit when measuring room or wall lengths and widths. To measure like a pro, learn pro tips for measuring irregular rooms.

Measure smaller areas individually. Then, add all your areas together. Plug the total lengths and widths into the calculator above. Use the result to order your tiles, keeping in mind that ordering an extra 10% to 20% is a good idea to allow for cuts and waste. Or, give the quantity to your contractor for an estimate.

To find the area of the room yourself, multiply the width by the length of the floor or wall in feet to find square footage. Easily find the project square footage using our square footage calculator.

Flooring installer laying a tile floor

Calculate Tile Material

Tiles come in many sizes and costs vary widely. Some tiles can be purchased individually or in individual sheets and some by the box. Boxes and sheets of tile cover different square foot areas as well.

If you know what tiles you would like to use, enter the size into the calculator above. Don’t forget to enter how much square footage the box covers if you use that method. If you are using sheets, enter the sheet size. The calculator will also give you a cost estimate if you know the price per tile, sheet, or box.

To do this calculation yourself, take your tile size in square inches and divide it by 144 (12in. x 12in.). This gives you the tile size in sq. ft.

Then divide the total area by the tile size in sq. ft. This will give you the number of tiles you need for your space.

For boxes, divide the area by the sq. ft. coverage for the box.

To account for cuts and breakage, we suggest ordering 10% to 20% to the total tile quantity ordered.

For example, to estimate tile for a kitchen backsplash area that is 12’ long and 18” deep using a 4″ x 4″ tile.

1. Find the area to be covered:

Convert inches to feet: 18” ÷ 12 = 1.5 ft.
Find total area: 1.5’ × 12’ = 18 sq. ft.

2. Find tile area:

Convert tile size to sq. ft.: (4” × 4”) ÷ 144 = 0.111 sq. ft.

3. Estimate Tile

Find total number of tiles needed: 18 sq. ft. ÷ 0.111 sq. ft. × 1.1 (overage) = 178 individual tiles

How to Estimate 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.

Illustration showing a pattern made up with two 3-inch by 6-inch tiles and one 6-inch by 6-inch tile
Illustration shows how to find the tiles needed for a pattern and how to find the square footage of the pattern.

See popular layout patterns

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.

How to Estimate 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

Hiring a Professional

Tiling can be a fun DIY project. But an experienced tile contractor can make the difference between a “good” outcome and a “professional” outcome. Another advantage in hiring a contractor is that you needn’t worry about miscellaneous expenses like renting a tile cutter, what type of mortar and trowel to use, or how many spacers you need. We can help you find local tile-installation professionals who can give you project cost estimates for your project.

To estimate other flooring materials, visit our carpet or flooring calculators.

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