Brick Calculator

The most important technical aspect of brickwork is the Mortar Joint. The mortar is not just "glue"; it is a cushion that accounts for small variations in brick size and allows the wall to breathe. A standard 3/8-inch joint is used because it provides the perfect balance of strength and workable "plasticity." When calculating bricks, you must account for the area of the joint. For modular bricks, the standard is 6.75 bricks per square foot. Our calculator handles this geometry automatically. Additionally, focus on the Mortar Type. Type N mortar is the general-purpose standard for residential walls, while Type S is used for load-bearing walls or projects in contact with the ground. Using the wrong mortar can lead to "Efflorescence"—that white, powdery salt that appears on brick faces when moisture moves through the wall incorrectly.

Another vital consideration is the Bond Pattern. A "Running Bond" (staggered joints) is the simplest and most common. However, patterns like "English Bond" or "Flemish Bond" involve alternating "headers" (bricks turned sideways) and "stretchers" (bricks laid long-ways). These patterns require more cutting and can increase your waste factor to 15%. Our tool provides a baseline count for running bond, so adjust your order if you are attempting a more complex architectural design. Finally, don't forget about Wall Ties and Weep Holes. If you are building a brick veneer over a wood frame, you must use metal "wall ties" every 2 feet to secure the brick to the house. You must also include "weep holes" (open joints) at the bottom to allow any moisture trapped behind the brick to escape. Our tool helps you with the bricks, but these engineering details are what prevent your wall from collapsing or causing rot in your home.