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Brick Wall Materials and Mortar Budget

Estimate whole bricks, joint mortar volume and supplied material costs for a rectangular wall.

Formula & worked example
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How to use this calculator

Enter the known values in the units shown. Results update as you type.
Where results are editable, change one to solve backwards. Lock a value to hold it fixed.
Use the worked example to check the method. Reset restores the starting fields.

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Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.

Formula and method

In initial displayed units, Wall length (L) 4, Wall height (H) 2, Brick length (l) 190, Brick height (h) 90, Brick width (w) 100, Mortar joint thickness (t) 10, Brick wastage 10, Price per brick 2 gives Wall area 8, Bricks needed 400, Total bricks needed 440, Cost of bricks 880.

Bricks = ceil(wall area/((brick length+joint)×(brick height+joint))×wall layers); waste-adjusted bricks = ceil(bricks×(1+waste)).

Worked example

Enter these known values and leave the other values blank.

Wall length (L): 4 m
Wall height (H): 2 m
Brick length (l): 190 mm
Brick height (h): 90 mm
Brick width (w): 100 mm
Mortar joint thickness (t): 10 mm
Brick wastage: 10 %
Price per brick: 2 USD

Wall area: 8 m²
Bricks needed: 400 bricks
Total bricks needed: 440 bricks
Cost of bricks: 880 USD

Assumptions and limitations

Brick dimensions and joints describe effective coverage, without openings or bond-pattern allocation. Mortar ingredient ratios are volumetric planning inputs; dry-to-wet factor is restricted to the retained 1.52–1.57 convention and waste to 0–20%. Mix recipes do not certify mortar performance. Exact whole-count operations accept finite quantities with magnitude below 10^50.
Use compatible measurement units. Clear an unknown before solving for it, and lock independent known values when comparing changes. Currency choices label amounts without exchange-rate conversion.

Common questions

Can I solve backward from the result?

Clear the unknown and enter independent known values. A rounded whole count cannot uniquely recover a continuous dimension; keep the original measured dimensions for procurement planning.

References

Use exact decimal ceilings for whole quantities because the captured mathjs ceiling can undercount immediately above an integer boundary. Bookify uses exact customary mass and volume definitions for density units, replacing rounded factors in the reference.

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