Brick Calculator
Estimate the number of bricks and mortar bags needed for a wall, with options for Standard and Modular brick sizes and a configurable waste percentage.
Results
What is it?
The Brick Calculator estimates how many bricks and 60 lb mortar bags you need for a straight wall. Standard brick (8×2¼×3¾ in) lays at approximately 6.75 bricks per square foot with ⅜ in mortar joints; modular brick lays at approximately 6.17 bricks per square foot.
How to use
1. Enter the wall length and height in feet. 2. Select the brick type. 3. Set the waste factor (10% for experienced masons; 15% for first-time projects). 4. The result includes bricks and 60 lb mortar bag quantities.
Example scenario
A 10 × 4 ft garden wall using standard bricks at 10% waste: area = 40 ft². Bricks = ceil(40 × 6.75 × 1.10) = ceil(297) = 297 bricks. Mortar = ceil(297/37) = 9 bags.
Pro tip
Order 10% extra bricks for cuts and future repairs — brick dye lots vary and a match later may be impossible. Mortar should be mixed to a consistency that holds a thumbprint without slumping. In cold weather, keep mortar above 40°F for at least 24 hours after placement.