Floors & Walls
Brick Calculator
Estimate bricks for a single wall face using the face-plus-joint module.
Enter your measurements
Results update as you type.
About this calculator
Counts bricks by the wall face: each brick occupies a module of its exposed face plus one mortar joint. Enter wall area (minus openings), the actual face dimensions, joint thickness and a waste allowance. Edge and cut effects are not included.
How to use this calculator
- Measure the wall and subtract openings.
- Measure the actual exposed face of one brick — do not use nominal names.
- Enter the joint thickness you will lay.
- Add waste for cuts and breakage, then calculate.
Formula
Module area = (face length + joint) × (face height + joint)
Brick equivalents = net area ÷ module area
Order bricks = ⌈equivalents × (1 + waste ÷ 100)⌉
Assumptions
- Single exposed face quantity only — a wall one brick thick.
- The module includes one joint per brick, a standard area-estimating convention; edges and cuts are excluded.
- A nominal module and an actual-plus-joint module are never combined.
Common mistakes
- Counting excluded or overlapping areas twice.
- Using nominal dimensions where actual installed dimensions or usable coverage are needed.
- Treating whole purchase quantities as an optimized cutting or installation plan.
Worked example
Try it: press “Load example” above the form.
14,400 in² with a 7⅝ × 2¼ in face and ⅜ in joint gives an 8 × 2⅝ in module — 685.7 equivalents, so 686 bricks.
Limitations
No structural design, bond-pattern optimizer or mortar quantity. Face-module estimating only.
Frequently asked questions
Why add mortar joints to brick dimensions?
The joint is part of the wall module. Divide wall face area by the module face area, then apply the allowance and round to whole bricks.
Does this include mortar bags or wall strength?
No. It is a face-quantity estimate. Estimate mortar separately and obtain the wall design, bonding, reinforcement and support details where required.
What does the worked example show?
14,400 in² with a 7⅝ × 2¼ in face and ⅜ in joint gives an 8 × 2⅝ in module — 685.7 equivalents, so 686 bricks.
Which assumptions should I check before using the result?
No structural design, bond-pattern optimizer or mortar quantity. Face-module estimating only.
Sources
Sources explain the methods and any named product presets. Check your product label where coverage, yield or density differs.
Calculation documentation · Updated 2026-11-08 · Version 1.6.4. Estimates are planning aids. Confirm quantities, coverage and prices with your supplier before purchasing. Found an error? Report it.
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