We recommend adding 5%-10% additional blocks to account for broken blocks or blocks that need to be cut for the edges. If youвЂ™re using a standard 16вЂі x 8вЂі x 8вЂі block, find the number of blocks needed by dividing the wall square footage by 0.89. Multiply 16Г—8, and then divide by 144 to get the answer.Д«lock sq ft = 16 Г— 8 / 144 = 0.89 sq. The standard block size is 16вЂі wide x 8вЂі high.

Now you need to figure out the square footage of the block you are using.

Wall sq ft = width Г— height Step Two: Find Block Square Footage Once you have the wall measurements, calculate the square footage by multiplying the width times the height. There are several formulas to figure out how many concrete blocks are necessary for a wall project, but youвЂ™ll need to start by measuring the wallвЂ™s width and height in feet. If youвЂ™re building a retaining wall, then try our retaining wall calculator. Note: Retaining walls are a bit different from a typical concrete block wall. Simply enter the dimensions of your wall project, and the concrete block calculator will figure out how many blocks you need. Keep reading to learn the process to calculate the number of concrete blocks you need, or just use the calculator above. A concrete block wall typically requires 1 1/ 8 blocks per square foot.

Findy block