Brick Calculator
Calculate how many bricks you need for a wall, plus mortar, cement, and sand quantities. Supports stretcher and Flemish bond with customisable wastage allowance.
Frequently asked questions
How many bricks do I need per square metre?
For a standard stretcher bond (half-brick wall), you need approximately 60 bricks per m². For a Flemish bond (one-brick wall), you need approximately 120 bricks per m². Always add 10% for wastage from cutting and breakage.
How much mortar do I need per m² of brickwork?
For a half-brick wall in stretcher bond, you need approximately 0.03m³ of mortar per m² of brickwork. This translates to roughly 6 bags of cement (25kg each) per m³ of mortar, mixed with sharp sand at a 1:5 or 1:6 ratio.
What is the standard UK brick size?
The standard UK brick is 215mm × 102.5mm × 65mm. With a standard 10mm mortar joint, the coordinating size becomes 225mm × 112.5mm × 75mm. Engineering bricks are the same dimensions but denser and stronger.
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