Brick Calculator — Bricks, Cement & Sand for a Wall (India)

Enter your wall's length, height and thickness, pick the brick or block, and get the number of units plus the cement and sand for the mortar. Works for clay brick, modular brick, fly-ash brick, AAC block and concrete block, at any mortar ratio.

Brick & Block Masonry Calculator

Bricks or blocks plus the cement and sand for the mortar — for any wall

Clay brick wall

Volume method · 1:6 cement–sand mortar

L Wall length (m)

H Wall height (m)

t Wall thickness (m)

0.115 = 4½″ half-brick · 0.23 = 9″ full-brick

Unit

Mortar ratio

Openings (m²)

Doors/windows to deduct

Clay brick needed

2,995 bricks

6.90 m³ of wall · 1:6 mortar

Bricks

2,995

Cement

8.7 bags

Sand

64.3 cft

Mortar (wet)

1.60 m³

Full material take-off

bricks

2,995

Cement bags (50 kg)

8.7

Sand (m³)

1.82

Sand (cft)

64.3

Sand (t)

2.91

Wet mortar

1.60 m³

Dry mortar

2.12 m³

Wall volume

6.90 m³

Cost estimate — edit to your local rates

Material	Quantity	Rate (₹)	Amount
Bricks	2,995	/brick	₹23,958
Cement	8.7 bags	/bag	₹3,321
Sand	64.3 cft	/cft	₹3,856
Total (materials)			₹31,135

Indicative — type today's local rates. Labour is separate: see the material price lists and labour rates.

Add 3–5% for breakage and cutting when you order bricks. Sand and cement are for the mortar only — get plastering separately on the plaster calculator, and current rates on the cement and labour pages.

How it works

The calculator uses the volume method, which stays correct for any wall thickness:

Wall volume = length × height × thickness − openings.
Number of units = wall volume ÷ the nominal unit volume (the unit plus a 10 mm mortar joint on every face).
Mortar = wall volume − the volume of the solid units. This wet mortar is taken to dry material at ×1.33 and split into cement and sand by the mix ratio.

A standard clay brick is 230 × 110 × 70 mm; with a 10 mm joint each brick occupies 240 × 120 × 80 mm, which works out to about 434 bricks per m³ of brickwork. A modular brick (190 × 90 × 90 mm) works out to exactly 500 per m³.

Worked example

A 10 m × 3 m wall, 230 mm (9″) thick, in clay brick with 1:6 cement–sand mortar:

Wall volume = 10 × 3 × 0.23 = 6.9 m³
Bricks = 6.9 ÷ 0.002304 ≈ 2,995 bricks (order 3–5% more for breakage)
Mortar cement ≈ 8.7 bags, sand ≈ 1.82 m³ (64.3 cft)

Which brick or block?

Unit	Size (mm)	Notes
Clay brick	230 × 110 × 70	The traditional Indian brick
Modular brick	190 × 90 × 90	IS-modular; 500 per m³
Fly-ash brick	230 × 110 × 75	Lighter, smoother, less mortar
AAC block	600 × 200 × 200	Fast, light, good insulation — apartments
Concrete block	400 × 200 × 200	Solid or hollow; boundary & load walls

Frequently asked questions

How many bricks are in 1 cubic metre? About 500 modular bricks (190 × 90 × 90 mm) or 434 traditional bricks (230 × 110 × 70 mm) per cubic metre of brickwork, once the 10 mm mortar joints are counted.

How much cement and sand for brickwork? For 1:6 mortar, roughly 8–9 bags of cement and 1.8 m³ of sand build a 10 m × 3 m, 9-inch wall. The exact amount depends on the wall volume and the mix — the calculator computes both.

What is the mortar ratio for brickwork? 1:6 (cement:sand) is common for 9-inch walls, 1:4–1:5 for thinner or load-bearing walls, and 1:3 for very strong work. Richer mixes use more cement.

Should I add extra for wastage? Yes — add 3–5% to the brick count for breakage and cutting at corners and openings.