Brick calculator

Formula and assumptions

A standard Indian brick is 190 x 90 x 90 mm, or 200 x 100 x 100 mm with a 10 mm mortar joint. That gives 50 bricks per m² for a 4.5 inch wall and 100 per m² for a 9 inch wall. Wet mortar is the wall volume minus the volume of the bricks, dry volume is wet × 1.33, and each material takes its share of the mix ratio. A 50 kg cement bag is 0.0347 m³.

Estimate only. Wastage is added to bricks, cement and sand (5% by default). Deduct door and window openings from the wall area, and confirm quantities with your engineer or mason.

Need materials?

We stock cement, bricks, blocks and more at Kanth Road, Amroha. See our bricks and blocks.

FAQ

How many bricks are needed per square metre?

About 50 bricks for a 4.5 inch wall and 100 for a 9 inch wall, using standard 190 x 90 x 90 mm bricks with 10 mm joints.

How much cement and sand does brickwork need?

A 9 inch wall uses about 0.046 m³ of wet mortar per m². At 1:6 that works out to roughly 0.25 bags of cement per m² before wastage. Use the calculator for your wall size.

Should I deduct doors and windows?

Yes. Enter the net wall area by reducing the length or height, or run the calculator once for the full wall and subtract the opening area share.