Brick Calculator
Estimate brick quantity for a wall from wall length, wall height, brick face dimensions, mortar joint thickness, and waste factor. Use metric or imperial units before entering measurements.
Brick Calculator
Guide
Brick estimate basics
This brick calculator counts bricks for a straight wall face. It uses wall length, wall height, brick face size, mortar joint thickness, and a waste allowance. It does not estimate mortar volume, wall thickness, labor, or material cost.
Estimate
How many bricks do I need for a wall?
The count depends on two areas: the wall area and the area covered by one brick plus its mortar joint. A larger brick face covers more area, so fewer bricks are needed. A thicker mortar joint increases the module size and slightly reduces the brick count.
The calculator first works out the visible wall area. Then it divides that area by the brick module area and adds waste. The result shows the base number of bricks and the recommended total after the waste factor.
Diagram
Wall and brick dimensions
Inputs
How to use the brick calculator
Mortar joint
How mortar joints affect the count
The joint thickness is part of the brick module size. That means the count is based on brick faces plus mortar spacing. It does not calculate the volume of mortar, cement, or sand.
Planning
Other considerations
Openings, corners, piers, bond patterns, and cut bricks can change the real order quantity. If the wall has windows, doors, returns, or a non-standard pattern, use the result as a starting point. Adjust the waste factor or calculate sections separately.
Formula
Formula steps
Wall area
Wall length × Wall height
Brick module length
Brick length + Mortar joint
Brick module height
Brick height + Mortar joint
Brick module area
Module length × Module height
Base brick count
Wall area ÷ Brick module area, rounded up
With waste
Base brick count × (1 + Waste factor / 100), rounded up
Example
Example calculation
This example uses metric units: a 10 m by 2.4 m wall, 0.215 m by 0.065 m bricks, a 0.01 m mortar joint, and 10% waste.
FAQ
Brick calculator FAQ
How many bricks do I need for a wall?
Enter the wall length, wall height, brick length, brick height, mortar joint thickness, and waste factor. The calculator estimates the base brick count and the total count after waste.
How does the brick calculator work?
It divides wall area by the area of one brick module. The module includes the brick face plus the mortar joint added to brick length and height.
Does this include mortar volume?
No. The mortar joint is used to estimate spacing between bricks, but the calculator does not estimate mortar, cement, or sand quantities.
Why is brick width not included?
This version counts visible brick faces for a wall face. Brick width matters for wall thickness and mortar volume, which are outside the current calculation.
What waste factor should I use?
Use a small allowance for cuts, breakage, chipped bricks, and handling. A simple straight wall may need less waste than a wall with corners, returns, or many cuts.
Can I use inches or millimeters?
Yes, as long as every length input uses the same unit system. Do not mix inches with feet or millimeters with meters in the same calculation.
Does this account for doors and windows?
Not directly. For walls with openings, calculate the solid wall sections separately or subtract the opening areas before using the estimate.
Sources
- Standard area-based brick quantity estimate using visible brick face dimensions.
- Brick module size is calculated from brick face dimensions plus mortar joint thickness.