Brick Calculator
Estimate how many bricks you need for a wall. Enter the length and height, choose single or double skin, and get the brick count for standard UK bricks, including a 10% allowance for cuts and breakages.
How many bricks per square metre?
For standard UK bricks (215 × 102.5 × 65mm) laid with 10mm mortar joints, you need about 60 bricks per square metre for a single-skin (half-brick) wall, and double that for a one-brick (double-skin) wall. We work out the wall area, apply 60 per m² per skin, and add 10% for waste.
- Single skin: ~60 bricks per m²
- Double skin: ~120 bricks per m²
- +10% added for cuts and breakages
Estimates are guidance only, always confirm critical figures against your own measurements, supplier quotes and, for tax, your accountant or HMRC.
Common questions
How many bricks are in a square metre?
About 60 standard UK bricks per square metre for a single-skin wall (215 × 102.5 × 65mm bricks with 10mm joints), or roughly 120 per m² for a double-skin wall. This calculator applies that automatically.
Should I order extra bricks?
Yes, always allow for waste from cuts, breakages and the odd reject. A 10% allowance is standard and is included in this calculator's total.
Does this work for blocks too?
This tool is set up for standard UK bricks at 60 per m². Concrete blocks are larger (around 10 per m² for standard 440×215mm blocks), so a brick count won't apply, but the wall-area figure is still useful.
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