If you are looking forward to installing a new backsplash, the first thing you need to do is calculate your backsplash area.

On this guideline, we will show you step by step how to accomplish that.


First, you will need the following:

  • Measuring Tape
  • Pencil or Pen
  • Notepad
  • Calculator

tools for calculating the area of a backsplash

For calculation purposes, we are going to measure everything in inches, not feet.

Using a measuring tape, measure the space between the countertop and the upper cabinets. That is the height of your backsplash. Write the value down in your notepad.  calculating the area of your backsplash - step 1

Now measure the length of your backsplash. Stretch the tape throughout the entire length of your backsplash. Write the value down (in inches) on your notepad.

calculating the length of your backsplash - step 2

writing down your measurements - backsplash area calculation

Let's work on the math! Using the calculator, multiply the height by the length of your backsplash, and then divide the result by 144.formula to calculate the area of a backsplash
In the case of windows

If you have a window or any other obstacle intersecting your backsplash area, you will need to subtract this area from the total square footage area you want to tile.

backsplash area calculation - accounting for windows
In the example above, we measured the window area, just like we did with the backsplash (Length x Height ÷ 144 all in inches). Now we need to subtract the result from the total area of your backsplash.

In this case:

10 × 36 = 360 ÷ 144 = 2.5 sq/ft.

So, the final area of this backsplash, without the window area, will be 6.5 sq/ft:
9 sq/ft - 2.5 sq/ft = 6.5 sq/ft

Remember always to order 10% more tile to account for cuts and waste during the installation.

Make sure to check our article about installing glass tiles around electrical outlets.

Shop for glass tile backsplash today!