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About this tool
Bricks, mortar volume, cement bags and sand for a wall of any size, with joint thickness, openings and wastage.
A brick quantity calculator turns wall length, height and thickness into the number of bricks, the mortar volume and the cement and sand inside that mortar. It counts bricks by the nominal cell each one fills — brick size plus one mortar joint in all three directions, so a 190 × 90 × 90 mm brick with a 10 mm joint occupies exactly 0.002 m³ and gives the familiar 500 bricks per cubic metre — then takes the leftover volume as mortar and bulks it by 1.33 before splitting it by the cement : sand ratio. It is aimed at masons, contractors and homeowners pricing a wall before ordering.
Open Brick Quantity Calculator on AltFTool — it loads instantly in your browser.
In the Wall panel give Wall length (m), Wall height (m), Wall thickness (mm) — 230 mm (one brick, 9") is a preset chip — and Doors and windows to deduct (m²).
Pick a Brick size such as Indian modular 190 x 90 x 90 mm or AAC block 600 x 200 x 100 mm, then Mortar joint (mm), Mortar mix (cement : sand) and Breakage / wastage (%).
Read Bricks to buy over rows for Wet mortar volume, Dry mortar volume, Cement bags (50 kg), Sand and Water for the mortar, then press Copy result.
A 10 mm joint versus a 15 mm joint changes both the brick count and the mortar volume, and both are recalculated.
Wet mortar, dry mortar, cement bags, sand in m³, cft and kg, and mixing water — not just a brick number.
Indian modular and traditional, UK, US modular and AAC block sizes, plus a fully custom size.
500 standard Indian modular bricks of 190 × 90 × 90 mm laid with a 10 mm joint, because each brick plus its joint fills 0.2 × 0.1 × 0.1 = 0.002 m³. A 230 × 110 × 70 mm traditional brick with the same joint gives about 434 per cubic metre.
Roughly 20 to 25% of the wall volume for traditional brick sizes with a 10 mm joint — a 6.9 m³ wall works out to about 1.6 m³ of wet mortar. Smaller bricks mean more joints and more mortar; large blocks with thin-bed adhesive use far less.
Multiply the wet mortar volume by 1.33 to get the dry ingredient volume, then split it by the mix ratio. For 1.6 m³ of wet mortar at 1:6 that is 2.12 m³ dry, giving 0.30 m³ of cement — about 8.7 bags of 50 kg — and 1.82 m³ of sand.
5% is a normal allowance for breakage in transit and cutting; go to 10% for long haulage, soft handmade bricks, or a wall with many cut closers around openings. The allowance covers breakage only, so add separately for any bricks you plan to hold back as spares.
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