Brick Calculator
Calculate a planning quantity of bricks for a rectangular wall while accounting for mortar joints and waste.
What is the brick calculator?
Calculate a planning quantity of bricks for a rectangular wall while accounting for mortar joints and waste.
How to use the calculator
Enter wall length and height, then the actual brick dimensions and mortar joint. Add a waste allowance for cuts, breakage, and pattern requirements.
How brick quantity is estimated
A wall is divided into the repeating area occupied by one brick plus its mortar joint. This gives a planning density of bricks per square foot. Actual coverage can vary by bond and manufacturer.
Subtracting openings
Doors, windows, and other openings reduce brick area. For a precise takeoff, calculate the net wall area by subtracting openings before applying the brick density.
Brick bond and pattern
Running bond, stack bond, soldier courses, corners, arches, and decorative patterns can change the actual quantity. Specialty units should be counted separately.
Ordering bricks
Brick is often sold by the piece, bundle, or pallet. Confirm the supplier’s pieces per pallet and return policy, and order consistently by lot when appearance matters.
How to improve the accuracy of your estimate
Use the actual product dimensions, package coverage, material density, installed depth, and current local price whenever those values are available. Measure the project in smaller sections when the shape is irregular, and keep fixed costs separate from area-based quantities. For a large purchase, compare the calculator result with the supplier’s own coverage or takeoff before ordering.
Common mistakes to avoid
The most common errors are mixing inches and feet, using nominal dimensions instead of actual product dimensions, forgetting waste or overage, treating volume and weight as interchangeable, and assuming a universal installation depth. Enter the values from your actual product and project specification whenever possible.
Worked planning example
A 20 ft × 8 ft wall has 160 sq ft of face area. The final brick count depends on actual brick dimensions, joint size, openings, bond pattern, and waste.
Useful Brick reference values
| Input | Why it matters |
|---|---|
| Standard modular brick | Use actual product dimensions |
| Mortar joint | Enter actual planned joint |
| Waste | Increase for cuts, openings, or complex patterns |
Reference values are planning aids. Product specifications and local conditions take precedence.
Frequently asked questions
How many bricks are needed per square foot?
There is no single number because brick dimensions and mortar joints vary. Use the actual brick and joint dimensions in the calculator.
Should I subtract windows and doors?
Yes. A detailed takeoff should subtract the wall area occupied by openings and then account separately for lintels, corners, and specialty units.
How much extra brick should I buy?
A modest allowance covers breakage and cuts. Complex patterns and extensive cuts can justify more.
Can I use this calculator for an irregular project?
Yes, but the best approach is to divide the project into measurable sections and combine the results. Irregular edges, curves, openings, and changes in depth can make a single rectangular measurement less accurate.
What should I verify before buying materials?
Verify the product label or manufacturer coverage, actual dimensions, density or package yield, required installation depth, and supplier delivery terms. For structural or regulated work, also verify the project specification and local requirements.