Bricks & Blocks Calculator — Bricks, AAC Blocks & Concrete Blocks
Count the units for any wall: pick bricks, AAC blocks or concrete blocks, enter length, height and thickness — and get the order quantity plus cement, sand or adhesive needs.
Bricks required
–
rounded up
Order with 10% wastage
–
recommended order quantity
Wall volume
–
cubic metres of wall
Cement (1:6 mortar)
–
50 kg bags
Sand
–
cubic feet
Block adhesive
–
40 kg bags (≈1 per 10 m²)
How this bricks & blocks calculator works
Pick your wall material — bricks, AAC blocks or concrete blocks — then enter the wall's length, height and thickness. The calculator converts everything to cubic metres of wall, multiplies by the standard units-per-m³ rate for that material, and rounds up. For bricks and concrete blocks it also estimates cement bags and sand for 1:6 mortar; for AAC blocks it estimates adhesive bags instead, since AAC is laid with thin-bed adhesive rather than mortar.
The formula
- Wall volume (m³) = length × height × thickness
- Bricks = wall volume × 500 per m³, rounded up
- AAC blocks = wall volume ÷ (0.603 × 0.203 × (thickness + 0.003)), rounded up — 600 × 200 mm face with 3 mm joints
- Concrete blocks = wall volume ÷ (0.41 × 0.21 × (thickness + 0.01)), rounded up — 400 × 200 mm face with 10 mm joints
- Order quantity = units × 1.10 (bricks) or × 1.05 (blocks), rounded up
- Mortar (bricks / concrete blocks): dry mortar = wet mortar × 1.33; cement bags = dry mortar ÷ 7 ÷ 0.0347 m³ per 50 kg bag; sand = dry mortar × 6/7 × 35.3147 cft
- AAC adhesive = wall face area (m²) ÷ 10, rounded up to 40 kg bags
Worked example
Take a wall 10 ft long and 10 ft high. With 9-inch bricks: 2.12 m³ of wall → 1,062 bricks; order 1,169 with 10% wastage, plus 4 cement bags and 26 cft sand. With 200 mm AAC blocks: 75 blocks; order 79 with 5% wastage, plus 1 bag of adhesive. With 200 mm concrete blocks: 103 blocks; order 109, plus 2 cement bags and 9 cft sand.
Assumptions to know
Rates assume standard Indian sizes: modular bricks 190 × 90 × 90 mm with 10 mm joints (500/m³), AAC blocks 600 × 200 mm face with 3 mm adhesive joints, and concrete blocks 400 × 200 mm face with 10 mm joints. Mortar is estimated at the 1:6 cement–sand ratio with 0.30 m³ of wet mortar per m³ of brickwork and 0.12 m³ per m³ of concrete blockwork; dry mortar is taken as 1.33× wet. A 50 kg cement bag is 0.0347 m³. If your supplier's unit sizes differ, confirm before ordering — the count scales with the actual block size.
Measuring tip
Measure one wall at a time and add up the totals — do a whole room in one go and you’ll count the corners twice. For a normal room, work out the two long walls and two short walls separately, then subtract the door and window openings (a typical door is about 21 sq ft, a window 12–15 sq ft). Enter the net sizes for the most accurate count.
Frequently asked questions
How many bricks are in 1 cubic metre of brickwork?
One cubic metre of brickwork holds about 500 standard modular bricks (190 × 90 × 90 mm) with 10 mm mortar joints. This calculator simply multiplies your wall's volume by 500.
What is the standard brick size in India?
The BIS modular standard is 190 × 90 × 90 mm — laid with 10 mm mortar joints, each brick occupies a 200 × 100 × 100 mm module. Traditional non-modular bricks (230 × 110 × 70 mm) are still common in many regions.
How many AAC blocks are in 1 cubic metre?
About 40 AAC blocks of 600 × 200 × 200 mm with 3 mm adhesive joints fit in one cubic metre (200 mm wall). Thinner walls need more per cubic metre — a 100 mm wall works out to roughly 79 blocks per m³.
How many concrete blocks are in 1 cubic metre?
About 55 concrete blocks of 400 × 200 × 200 mm with 10 mm mortar joints fit in one cubic metre (200 mm wall).
How much AAC block adhesive do I need?
Plan roughly one 40 kg bag of block adhesive per 10 square metres of wall face. This calculator shows the exact bag count for your wall, rounded up.
How much extra should I order for wastage?
Order 10% extra for bricks and 5% extra for AAC or concrete blocks. Some units always break during transport, unloading and cutting around openings. A slightly bigger order costs less than a second delivery.
How do I estimate cement and sand for the same wall?
This calculator does it for you: for bricks and concrete blocks it estimates 50 kg cement bags and sand (cft) for standard 1:6 cement–sand mortar. AAC blocks use adhesive instead of mortar, so no cement or sand is shown.
How many bricks do I need for a 10 × 10 ft wall?
A 10 ft long, 10 ft high, 9-inch wall needs about 1,062 bricks — order 1,169 with the 10% wastage buffer, plus roughly 4 cement bags and 26 cft of sand for 1:6 mortar.