Brick Quantity Calculator
Enter your walls one by one, or just the floor area, and get the number of bricks or blocks, cement bags, sand and the cost, with doors and windows taken out. Compare clay, fly ash, AAC and concrete blocks for the same walls.
1Compare
Same walls, every brick type
Each type is worked out for the walls above with its usual size, joint and wastage. Rates are your rates for the type you selected and the defaults for the others.
| Type | Units | Cement or adhesive | Sand | Materials | Labour | Total |
|---|---|---|---|---|---|---|
| Clay brick | 18,748 | 54 bags | 11.2 cum | ₹2,05,199 | ₹65,561 | ₹2,70,760 |
| Modular clay brick | 22,947 | 56 bags | 11.5 cum | ₹2,63,378 | ₹65,561 | ₹3,28,940 |
| Fly ash brick | 18,570 | 54 bags | 11.2 cum | ₹1,75,920 | ₹65,561 | ₹2,41,481 |
| AAC block | 2,165 | 45 adh. | — | ₹2,13,993 | ₹43,708 | ₹2,57,700 |
| Solid concrete block | 3,077 | 31 bags | 6.3 cum | ₹1,68,951 | ₹43,708 | ₹2,12,659 |
| Hollow concrete blockLowest | 3,077 | 31 bags | 6.3 cum | ₹1,41,393 | ₹43,708 | ₹1,85,101 |
2Choose
Which brick or block should you use?
Each type suits a different job. Price per unit is only part of the story: size, weight, mortar, plaster and speed of laying all change the final cost, which is why the comparison above is worked out for your own walls.
Clay brick
230 × 110 × 75 mmGood for: load-bearing walls of low-rise houses, outer walls, any wall that must be easy to cut and repair.
Watch: sizes vary between kilns, so joints and plaster get thicker; heavier than blocks.
Modular clay brick
190 × 90 × 90 mmGood for: projects drawn to the modular 200 mm grid, where fewer cut bricks are needed.
Watch: not stocked everywhere; more bricks per cubic metre than traditional size.
Fly ash brick
230 × 110 × 75 mmGood for: infill and load-bearing walls where a uniform, smooth brick saves plaster; uses power-plant ash.
Watch: quality depends on the maker, so ask for compressive strength test results.
AAC block
600 × 200 × 100 to 200 mmGood for: infill walls in RCC framed buildings and upper floors, as it is far lighter than brickwork and keeps rooms cooler.
Watch: laid with thin-bed adhesive; needs anchors for heavy fixtures; not load-bearing unless designed for it.
Solid concrete block
400 × 200 × 100 to 200 mmGood for: compound walls, basements, stores and walls that take knocks.
Watch: heavy, so it adds load on beams and slabs in framed buildings.
Hollow concrete block
400 × 200 × 100 to 200 mmGood for: boundary and compound walls laid quickly; cores can take steel and concrete for strength.
Watch: fixing nails and brackets needs care; fill cores where loads are applied.
Load-bearing walls need an engineer's check. Brick strength, wall thickness and mortar mix for walls that carry slabs must come from your structural drawings, not from a price comparison.
3Method
How the quantities are worked out
The same method a site engineer uses, done for each wall and added up.
- Blocks fill the wall. For AAC and concrete blocks the block width is taken as the wall thickness, so pick the wall that matches the block you buy.
- AAC uses adhesive. With 3 mm thin joints, the mortar is replaced by block adhesive, counted in 40 kg bags.
- Openings come out by volume. Each door or window removes its area × the thickness of the wall it sits in.
- Lintels and beams are not deducted. Deduct them as openings if you want a closer figure.
4Reference
Units per cubic metre and square metre
With 10 mm joints (3 mm for AAC). Useful for checking a supplier's figure.
| Type | Size (mm) | Per cum of wall | Per sq.m, 115 mm wall | Per sq.m, 230 mm wall |
|---|---|---|---|---|
| Clay brick | 230 × 110 × 75 | 408 | 47.0 | 94.0 |
| Modular clay brick | 190 × 90 × 90 | 500 | 57.5 | 115.0 |
| Fly ash brick | 230 × 110 × 75 | 408 | 47.0 | 94.0 |
| AAC block | 600 × wall × 200 | 41 | 8.2 | 8.2 |
| Solid concrete block | 400 × wall × 200 | 58 | 11.6 | 11.6 |
| Hollow concrete block | 400 × wall × 200 | 58 | 11.6 | 11.6 |
5Scope
What this calculator does and does not do
Knowing the limits helps you add the right margin before you place an order.
✓It does
- Count bricks or blocks with mortar joints and wastage
- Take out doors and windows by the wall they sit in
- Work out cement and sand for the mortar, or AAC adhesive
- Price bricks, cement, sand and labour, per sq.ft. and per cum
- Compare all six brick and block types for the same walls
- Give an order list, CSV, shareable link and print
✕It does not
- Check structural strength or design load-bearing walls
- Deduct lintels, beams and columns inside walls unless you add them as openings
- Include plaster; use the cement calculator for that
- Add transport, loading, unloading or scaffolding
- Know your local prices; change the rates to match your supplier
6FAQ
Questions
How many bricks are needed for 1 cubic metre of wall?
With 10 mm mortar joints, about 434 traditional bricks (230 × 110 × 75 mm) or 500 modular bricks (190 × 90 × 90 mm) go into one cubic metre of brickwork. The calculator adds your wastage on top.
How many bricks are needed per square foot of wall?
For a 9 inch (230 mm) wall, about 9 traditional bricks or 11 modular bricks per sq.ft. of wall face. For a 4.5 inch (115 mm) wall, about half that. The brick pattern above the result shows the figure per square metre for the brick and wall you choose.
How is the number of bricks calculated?
Wall volume = length × height × thickness, less doors and windows. Each brick with its mortar joint takes (length + joint) × (width + joint) × (height + joint). Bricks = wall volume ÷ that volume, and wastage is added. Blocks are counted the same way, with the block filling the wall thickness.
How much cement and sand is needed for brickwork?
Mortar is the wall volume not taken by bricks, usually about a quarter of the wall for traditional bricks. Its dry volume is 1.33 times the wet volume, split by the mix ratio. In 1:6, one part is cement and six parts sand; one bag of cement is about 0.0347 cum. AAC blocks use a thin-bed adhesive instead, counted in 40 kg bags.
Which mortar mix should I use?
1:6 cement sand mortar is common for 9 inch walls and 1:4 for 4.5 inch partition walls, which need more strength. Your structural engineer or contractor may specify a different mix.
Clay, fly ash or AAC: which is cheaper?
It depends on local prices. The Compare tab works out the same walls in every brick and block type, with units, mortar, material, labour and total cost, and marks the cheapest. AAC blocks need far fewer units and less mortar and are lighter, which can reduce the structure, but cost more per unit.
What wastage should I add?
About 5% for bricks, for breakage in transport and cutting at corners and openings, and about 3% for blocks. Increase it if bricks are handled several times or delivered from far away.
What is a brass of sand?
A brass is 100 cubic feet, about 2.83 cubic metres. The material slip shows sand in cubic metres, cubic feet and brass so you can order in the unit your supplier uses.
Is my data stored?
No. The calculator runs in your browser and loads no third-party scripts. Inputs leave the page only if you copy the link, share on WhatsApp or download the list.
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