Enter your wall size in feet and get the brick or AAC block count with 5% wastage, plus the cement bags and sand for 1:6 mortar — the same calculation VastuCalc runs on site, offline.
How the brick count is calculated
The calculator uses the volumetric method that quantity surveyors use. A standard Indian modular brick is 9″ × 4″ × 3″; with a 10 mm mortar joint on each face, one brick occupies about 0.0023 m³ of wall. The wall volume divided by that occupied volume gives the raw count:
bricks = (length × height × thickness) ÷ (brick + 10 mm joint volume) × 1.05
Mortar volume is the wall volume minus the solid brick volume. It is converted to dry volume with the standard ×1.33 factor, then split 1:6 into cement and sand — one 50 kg cement bag is taken as 34.7 litres.
Worked example — 10 ft × 10 ft, 9-inch wall
100 sq ft of 9″ wall is about 2.12 m³. That needs roughly 972 bricks (with wastage), 2.7 bags of cement and 19.6 cft (0.2 brass) of sand for 1:6 mortar. Try it above — the defaults are exactly this wall.
Red brick, fly-ash brick, or AAC block?
Fly-ash bricks share the red brick's nominal size, so counts match; the difference is cost, finish and strength class. AAC blocks are far larger (600 × 200 × 100 mm), so a wall needs about 85–90% fewer units and noticeably less mortar — which the calculator reflects when you switch material.
Frequently asked questions
How many bricks are there in 1 square foot of a 9-inch wall?
Roughly 9–10 standard Indian bricks (9″ × 4″ × 3″) per square foot of 9-inch wall, including the mortar joint. A 4½-inch partition wall takes about half that, around 4–5 bricks per square foot.
How many bricks come in a standard truckload?
Brick suppliers in India typically deliver in lots of 1,000, and a full truck usually carries 2,500–4,000 bricks depending on the vehicle. Order in thousands and keep the 5% wastage buffer.
Why does the result include 5% wastage?
Bricks break in transport, handling and cutting. Sites routinely lose 3–7%, so a 5% buffer is the standard planning allowance — running a load short mid-wall costs more than the extra bricks.
Are door and window openings subtracted?
No — the calculator counts the full wall rectangle. For a tighter estimate, calculate the opening areas as their own 'wall' and subtract that brick count.
How many AAC blocks replace 1,000 red bricks?
One 600×200×100 mm AAC block occupies the volume of roughly 7–8 standard bricks with mortar, so about 130–145 AAC blocks replace 1,000 bricks in the same wall.
Reviewed on 15 August 2026. These are preliminary planning quantities from standard methods — actual consumption varies with workmanship, wastage and site conditions. VastuCalc does not provide structural design; sizes, grades and reinforcement must come from a qualified engineer.