Materials
Brick Calculator
Estimate brick quantity for a single wall face from the wall dimensions, openings, brick length and height, and mortar-joint thickness. The calculation is a useful first quantity check for a simple repeating layout. It does not specify a wall’s construction or structural requirements.
The calculation
Enter wall dimensions, openings, brick face dimensions, mortar joint width and waste. The estimate uses brick-and-joint face area for one layer. Wall thickness, bond patterns, corners and structural design are not calculated.
A 5 m by 2.4 m wall with no openings has an area of 12 m². With 215 mm by 65 mm bricks, 10 mm joints and 5% waste, the estimate is 747 facing bricks for one layer.
- Wall length
- 5 m
- Wall height
- 2.4 m
- Doors and windows to subtract
- 0 m²
- Brick face length
- 215 mm
- Brick face height
- 65 mm
- Mortar joint width
- 10 mm
- Waste allowance
- 5 %
Facing bricks to buy747
Net wall face area12 m²
Detailed guide (English)
Include the mortar joint in the module
Net wall area = wall length × wall height − openings. The repeating face module is (brick length + joint) × (brick height + joint), with both dimensions converted into the same length unit. Divide net wall area by this module area, apply the chosen waste allowance and round upward.
The brick dimensions here are the actual face dimensions entered by you. A nominal size may already include an allowance for the joint. Adding a joint again to an already nominal module would make the assumed coverage too large and reduce the estimated brick count incorrectly.
A single-face estimate has limits
The repeating-module approach is an approximation for a regular wall field. End conditions, corners, returns, bond patterns and cut units can change the order. Decorative details, piers, lintels and special shapes need a separate quantity take-off rather than a larger unexplained percentage.
The result represents one face or leaf using the entered brick orientation. It does not automatically double for a multi-leaf wall, include a backing block wall or calculate mortar. Concrete masonry and clay brick also have different product details: use the dimensions and instructions for the material actually specified.
Check the wall measurement and purchase unit
Measure the openings that interrupt the brickwork, and record any reveals that add masonry surfaces. Break a stepped or irregular elevation into simpler sections before adding the areas. Keep the measured area separate from the waste allowance so another person can audit the estimate.
Ask the supplier how the bricks are sold. Rounding to whole units is different from rounding to packs or pallets. The selected allowance should cover the intended cutting and breakage assumptions; special units and retained spares can be listed separately for a clearer order.
Worked example
Example: a 10 m² wall face
For bricks measuring 215 × 65 mm with a 10 mm joint, the module is 225 × 75 mm, or 0.016875 m². A 10 m² net wall requires approximately 592.59 modules. With a chosen 5% allowance, the estimate rounds up to 623 bricks before supplier pack rounding.
Common questions
Does the calculator include mortar bags?
No. Mortar volume depends on more than the brick face count, including wall depth, joint details and the material. Use the specified mortar product’s estimating guidance.
Can I use the same count for any bond?
No. Layout and special units can change the quantity. Review the actual bond and corners rather than treating an area estimate as a brick-by-brick layout.
Sources and references
Manufacturer and measurement references for the assumptions described above.