How to calculate the area of your backsplash
If you are looking forward to installing a new backsplash, the first thing you need to do is calculate your backsplash area. Calculating an area to be covered by tiles doesn't require a professional. Unless you want to calculate the amount of tiles needed to cover a swimming pool, this is something you can do yourself!
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
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. 
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.
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.
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.
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.