Brick Calculator
Enter the wall size in feet and its thickness to estimate bricks, mortar, cement and sand.
How bricks are counted
The wall volume (length × height × thickness, minus doors and windows) is divided by the volume of one brick with its mortar joint. A full-size 9 × 4.5 × 3 inch brick with a ⅜-inch joint works out to about 11 bricks per cubic foot of brickwork; many kilns make slightly smaller bricks, which gives 13–14 per cft — so measure yours. A 40 × 10 ft wall, 9 inches thick, with 40 sq ft of openings, needs about 3,000 full-size bricks plus breakage.
Mortar, cement and sand
The space between bricks is mortar. Its dry volume is about 1.33 times the wet volume, split by the cement : sand ratio, with a 50 kg bag of cement taken as about 1.25 cft. 1:4 is stronger (load-bearing walls, outer walls), 1:6 is common for partition walls.
Good to know
- Brick sizes vary between kilns — measure a few of yours and enter the real size.
- Add 5–10% for broken bricks, more for "awwal/doam" mixes.
- Plaster is separate; it needs its own cement and sand.
How it works
- Enter — type or paste your values or text.
- Get the result — it is worked out in your browser.
- Adjust — change the inputs to compare, or copy the result.
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