How to Calculate Bricks in a Wall:

Use your tape measure to measure the length and width of the wall that you want to cover with brick. Convert these two measurements to inches.

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  Take the measurement of the length of your wall and add 9 inches (for a 4.5-inch overhang on both sides of the wall). Divide this measurement by 8.5 (the length of a standard brick plus a 1/2-inch mortar joint). This will be the number of bricks to cover the length.
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• Take the measurement of the height of your wall and divide it by 2.75 (the height of a standard brick plus a 1/2-inch mortar joint). This will give you the number of courses, or layers, required to top the wall.
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  Multiply the number of bricks in the length measurement by the number of courses and you have the number of bricks required to build your wall.