How this site is built
Review the calculation methodology to see which figures are exact geometry, which depend on material assumptions, and which figures have recorded sources. The source registry records every cited figure and its review status.
How the brick calculator works
The count uses the exposed face plus one mortar joint in each direction to find the area occupied by each brick in the wall.
It assumes one visible wythe and a simple face-area layout. Bond pattern, returns, piers, arches and openings need a layout takeoff.
Formula used for brick calculator
The calculator keeps the measured quantity separate from any purchase rounding or allowance.
- Wall face
area = wall length × wall height - Brick module
(face width + joint) × (face height + joint) - Count
wall area ÷ module area × allowance
Planning choices for brick calculator
| Situation | Use | Why it matters |
|---|---|---|
| Straight veneer | Face-area count | Gives a useful first order |
| Multiple wythes | Count each wythe | Face area alone misses thickness |
| Special bond or openings | Draw the layout | Cut units and headers change the count |
These are measurement and ordering choices, not structural specifications or code requirements.
Measure and order brick
Measure the brick you will buy. “Standard” and “modular” names are not reliable dimensions across all markets.
Confirm whether corners, sills and specials are sold separately, and keep matching batch material for repairs.
Brick Calculator questions
Why does joint thickness matter?
The joint is part of the repeating wall module, so changing it changes how many bricks fit in each square foot.
Does this include mortar?
No. It counts face bricks only.
Should I subtract windows?
Subtract large openings, then add back the extra cutting and detailing their edges require in a layout allowance.
Variables and units
For the default “Wall face” mode. Other modes label their own fields in the calculator.
length- Wall length: ft, in, yd, m, cm.
height- Wall height: ft, in, yd, m, cm.
faceWidth- Exposed unit width: in.
faceHeight- Exposed unit height: in.
joint- Joint thickness: in.
waste- Cuts and breakage allowance: %; optional.
Worked example: a 24 ft by 8 ft single-wythe wall
A straight wall is 24 ft long and 8 ft high, using a 7.625 in by 2.25 in exposed face, a 3/8 in joint and 5% waste.
| Field | Value |
|---|---|
| Wall length | 24 ft |
| Wall height | 8 ft |
| Exposed unit width | 7.625 in |
| Exposed unit height | 2.25 in |
| Joint thickness | 0.375 in |
| Cuts and breakage allowance | 5 % |
| Result | Value |
|---|---|
| bricks to buy | 1,383 bricks |
| Wall face area | 192 ft² |
These figures are generated by the same calculation the calculator above uses, so they update automatically if the method changes.
Where these numbers come from
| Assumption | Value used |
|---|---|
| Exposed face height of a modular brick.Brick sizes are not standardised across regions or manufacturers, and the mortar joint thickness matters as much as the brick. Measure the brick you are buying and enter both figures. Applicability: Launch-market starting value only. A future market must supply reviewed regional or product-specific provenance before overriding it. You can replace this with your own figure. | 2.25 in |
| Default mortar joint thickness.Joint thickness changes a brick count by roughly a fifth, so it is a required input rather than a hidden default. Measure an existing course or take the joint from your project specification. Applicability: Launch-market starting value only. A future market must supply reviewed regional or product-specific provenance before overriding it. You can replace this with your own figure. | 0.375 in |
Sources
- ASTM C216, Standard Specification for Facing Brick: ASTM International
Content release:
Published by Material Totals. Review the methodology and source assumptions.
Related calculators
- Retaining Wall Block CalculatorEstimate face blocks from wall length, height, exposed block dimensions, joints and cuts.
- Concrete CalculatorWork out the cubic yards and bags of concrete to order for your pour.
- Concrete Bag CalculatorConvert a required concrete volume into whole bags using the yield printed on your mix.
- Paver CalculatorEstimate whole pavers from the paved area, paver dimensions, joint width and cuts.
- Concrete Slab CalculatorEstimate concrete for a rectangular slab from its finished length, width, thickness and allowance.
- Concrete Footing CalculatorEstimate ready-mix concrete for continuous or isolated rectangular footings.