How to Calculate Sq Feet on Countertop

The price finally has come down on that granite countertop you’ve had your eyes on, but you still don’t know if it will fit into your kitchen remodeling budget. However, to figure it out you don’t have to call a professional for an estimate. You can figure the estimated cost yourself, but you must first calculate the square footage of your countertops.

Tape measure

Instructions

- 1
  Divide your countertop into sections. Measure each section until you come to a break in a straight line. For example, if the kitchen sink is right in the middle of the countertop, count the section to the left as one area and the section to the right as another. Or, if the counter is L-shaped, calculate each side of the L individually.
- 2
  Measure vertically and horizontally in each section. Multiply the measurements to determine the square footage of one area. For example, if the area from the wall to the kitchen sink is 48 inches long and 25.5 inches from front to back, multiply 48 and 25.5. Then, if the countertop continues on the other side of the sink, measure its length and depth and multiply those two numbers. For example, assume that side of the sink has the same dimensions.
- 3
  Calculate the square footage of the portions. Multiplying 48 by 25.5 equals 1,224 square inches. To determine square feet, divide by 144. This countertop portion is 8.5 sq. feet. Remember there are two sections with that dimension for a total of 17 sq. feet.
- 4
  Measure any triangular shapes that exist with some countertops. Measure the base, or length, of the triangle and then the height. Continuing with the example, assume the base is 36 inches and the height is 25.5. Multiply those figures and divide by two to find square inches. Multiplying 36 and 25.5 is 918; divided by two is 459 sq. inches. Divide that number by 144 to determine the square footage of the triangular portion, which is 3.19 square feet.
- 5
  Determine the square footage of the backsplash, and do not exclude the length of sinks. In the example, you have backsplash measuring 126 inches long and 4 inches tall. Figure the square footage by multiplying those two figures and dividing by 144. That square footage is 3.5 sq feet.
- 6
  Add the four countertop measurements together. The two rectangles each measure 8.5 sq. feet, the triangle is 3.19 sq. feet, and the backsplash is 3.5 sq. feet. Combined, the three sections encompass 23.69 sq. feet of countertop space.

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