Openings / Deductions
Optional: subtract doors, windows or other openings from the wall area.
Pillars / Columns
Optional: Add brick pillars or columns that must be included in the total brick quantity. Examples: Gate Pillars, Porch Columns, Boundary Wall Pillars.
Unit Specifications (mm)Preset
Cost Estimate
Optional: Enter prices to estimate total material costs.
Ready to Calculate
Select your material and enter your wall dimensions on the left, then click calculate to see your exact material requirements.
Why Pillars Matter In Brick Calculations
Many brick estimates fail because pillars, gate columns and structural supports are ignored. A wall may appear simple, but brick pillars can add hundreds of additional bricks to a project. This calculator automatically accounts for both wall sections and pillars, producing a more realistic material estimate and reducing costly ordering mistakes.
Why Openings Matter in Brick Calculations
Doors, windows and other openings reduce the actual wall area that needs bricks or blocks. Subtracting openings helps avoid over-ordering materials and gives a more accurate estimate for real construction work. Even a single standard door or window can remove the need for hundreds of bricks, saving you significant material costs and reducing site waste.
What this calculator does
This brick calculator accurately determines the quantity of bricks or blocks needed for walls, structures, and decorative masonry projects. It also estimates the volume of mortar required, helping you plan material ordering and delivery efficiently.
It accounts for various standard brick sizes (standard, modular, jumbo, metric) and allows for custom dimensions. Crucially, it factors in the mortar joint thickness (typically 10mm or 12mm), which significantly impacts the total brick count over a large area.
By preventing costly over-ordering or frustrating under-ordering, this tool is indispensable for masonry, construction, and landscaping projects.
Who should use it
This tool is designed for professionals and DIYers who need accurate masonry estimates:
- Masons & Bricklayers: For precise material take-offs before starting a job.
- Construction Contractors: To budget for materials and labor on building projects.
- Architects: For specifying material quantities in project plans.
- Landscapers: For estimating retaining walls, planters, and decorative features.
- DIY Homeowners: To plan small projects like garden walls or BBQs.
- Material Suppliers: To quickly verify customer orders.
Formula or calculation method
The core formula is: Number of Bricks = Wall Area / ((Brick Length + Joint) × (Brick Height + Joint)). This calculates how many bricks fit into one square meter, including the mortar surrounding each brick.
Mortar volume is calculated by finding the total volume of the wall and subtracting the volume of the solid bricks. The formula accounts for different brick sizes (e.g., 222×105×70mm standard vs. 190×90×90mm modular) and joint thicknesses (10mm, 12mm, 15mm).
Joint thickness drastically affects the count; a thicker joint means fewer bricks per square meter. Accurate calculations prevent mid-project shortages, which can delay work and cause color-matching issues with new brick batches.
Practical worked example
Let's calculate the bricks needed for a single-skin wall measuring 5m long and 2m high, using standard bricks (222×105×70mm) with 10mm mortar joints.
- Step 1: Calculate wall area.
5m × 2m = 10 m² - Step 2: Calculate face area of one brick + joint.
(0.222m + 0.010m) × (0.070m + 0.010m) = 0.232m × 0.080m = 0.01856 m² - Step 3: Calculate bricks per m².
1 / 0.01856 = 53.88 bricks/m² - Step 4: Calculate total net bricks.
10 m² × 53.88 = 539 bricks - Step 5: Add 5% waste factor.
539 × 1.05 = 566 bricks
Mortar Estimate: This wall would require approximately 0.035 m³ of mortar. If bricks cost $0.80 each, the estimated brick cost is $452.80.
Common mistakes to avoid
Using wrong brick dimensions
Brick sizes vary by region and manufacturer. Always measure your specific bricks rather than assuming a "standard" size.
Not accounting for mortar joints
Calculating based only on brick size will result in ordering 15-20% too many bricks.
Forgetting waste for breakage
Bricks break during transport and cutting. Always add 5-10% waste to avoid running short.
Forgetting openings
Subtract the area of doors and windows from your total wall area before calculating, or you will over-order significantly.
Frequently Asked Questions
Calculation method, worked example and reference
What this calculator does and formula: Net wall area = gross wall area − openings. Brick count is net area divided by the nominal brick face area including the selected mortar joint, then increased by waste.
Variables and units: Enter values in the units named by the controls. The calculator converts through its internal base unit or applies the displayed geometric or financial relationship before rounding the presented result.
Verified worked example: A 5 m × 3 m wall with a 2 m² opening has 13 m² net area before the selected brick module and waste are applied.
Result interpretation, assumptions and practical limits: Measure the actual brick and joint. Bond, returns, piers, cuts and breakage change quantities; confirm structural masonry and mortar requirements with the project designer.
Professional check: Treat the result as a planning estimate. Where safety, regulated work, contracts or significant money are involved, verify inputs and the result with the governing standard, manufacturer data and an appropriately qualified professional.