Brick Calculator
Estimate brick count, waste and optional material cost.
Project details
Enter your measurements below.
Brick count comes from the wall module, not the brick alone
A brick wall is a repeating pattern of brick faces plus mortar joints. If you divide wall area by the bare brick face area, the count will be too high because the joints also occupy space. This calculator uses the brick dimensions and joint allowance to estimate how many units fit the measured wall. Large doors and windows can be deducted when they truly remove masonry, while corners, cuts and breakage may justify a project-specific allowance. Wall thickness, bond, structural details and special shapes can change the real takeoff, so use the result as a planning count rather than a masonry design.
Use finished masonry dimensions, then deduct genuine openings.
Brick face plus mortar joint controls how many courses and units fit.
Corners, sills, arches and special shapes should be counted separately when they are part of the project.
How to use the Brick Calculator
- Measure the wall length and height for each brick area and subtract large openings that will not contain masonry.
- Enter the brick face dimensions and planned mortar joint thickness.
- Use the brick-plus-joint module to estimate units per square foot or square metre.
- Apply only a realistic allowance for cuts/breakage and round to whole bricks or supplier packs.
Mortar joints are part of the wall geometry
The visible wall is not made of brick faces touching edge to edge. Including the joint module prevents the unit count from being systematically overstated.
Use the count as a takeoff baseline
Compare the estimate with bond pattern, corner details and supplier packaging. Decorative courses or special units can be added as separate line items.
Worked example: a simple wall with one opening
- Wall
- 20 ft × 8 ft = 160 sq ft
- Door opening
- 21 sq ft
- Net masonry
- 139 sq ft
- Brick module
- Based on entered brick + joint size
The calculator applies the selected brick-and-joint module to 139 sq ft rather than to the gross 160 sq ft. A cut/breakage allowance can then be applied to the resulting unit count.
Practical planning tips
Check whether brick dimensions are nominal/module dimensions or actual unit dimensions before entering them.
Calculate piers, returns and short wall sections separately when their bond creates more cuts than the main field.
Keep special sill, coping or corner units outside the standard brick count unless the tool explicitly models them.
If reclaimed or highly variable brick is being used, inspect real dimensions and breakage before relying on a tight allowance.
Common mistakes to avoid
Dividing net wall area by bare brick face area and ignoring mortar joints.
Deducting every tiny penetration as though it saves a full brick.
Using the same allowance for a straight field wall and a wall with many corners or decorative details.
Assuming the calculator determines wall thickness, bond or structural reinforcement.
Brick Calculator FAQs
Why include mortar-joint size in a brick calculator?+
The joint occupies part of each repeating wall module. Ignoring it makes the calculated number of bricks per square foot too high.
Should I subtract windows and doors?+
Deduct significant openings that truly replace masonry. Very small penetrations often do not save whole units because surrounding cuts still consume brick.
Does bond pattern affect the count?+
It can affect cuts and special-unit needs. The base wall-area count remains useful, but complicated bonds may need a higher allowance or a more detailed takeoff.
Does this calculate mortar too?+
No. Use the Mortar Calculator separately because mortar consumption depends on joint dimensions, wall configuration and product yield.