How to Measure for a Backsplash for a Perfect Tile Fit

Start by measuring the length of the area where the backsplash will be placed using measuring tape. Then, measure the height of the backsplash area, starting from the countertop. 

If the backsplash area is uneven or does not have perfect right angles, you can break down the area into smaller, rectangular sections and measure each section separately. For example, your kitchen might have cabinets of different heights, so you can divide the area into rectangles that fit under each cabinet.

Write down these measurements and note any irregularities in the wall, such as bumps or recesses, which may impact the final measurements.

You’ll want to measure the areas of outlets, switches, or other obstacles. These measurements can be subtracted from the total area, as you’ll likely keep them in place during backsplash installation.

Most likely, your measurements are in inches. First, multiply the length by the height to get the total square inches. If you took measurements for multiple sections, add the square inches for each section together. Also, remember to subtract the area of outlets and obstacles measured. 

Tile is sold by square foot, so convert the square inches measurements to square feet by dividing the total by 144. 

For example, suppose you’ve measured a backsplash area with a height of 18 inches and a length of 36 inches. Here are the formulas you’d use:

• 18” x 36” = 648 square inches

• 648”/144 = 4.5 square feet of backsplash tile need

Adding a margin of extra tile material is smart to accommodate waste, cutting, and adjustments during installation. It’s also useful to have extra tile that matches the existing tile for repairs down the road. It’s common practice to add 10% overage for basic tile shapes. For more complex tiles, such as mosaic tile, it’s best to add 15% to 20% extra.