Brick & Block Calculator
Calculate the number of bricks or concrete blocks needed for a wall.
Assumptions used in this calculation
- Standard unit height and joint: Uses a default 90mm unit height and 10mm mortar joint thickness alongside the entered unit length, adjust your own numbers if your bricks or blocks differ.
- Waste allowance: Includes a default 5% waste allowance for cuts and breakage, more may be needed for complex wall layouts with many openings.
About this calculator
Calculates the number of bricks or concrete blocks needed for a wall from its area, unit dimensions, and mortar joint thickness, consolidating the master prompt's separate Brick Quantity and Block Quantity calculators, since both use the identical formula with different typical unit sizes.
Worked example
10 sqm wall, 190×90mm brick, 10mm mortar, 5% waste
Result: ≈ 525 bricks needed
Was this helpful?