What is Brick Calculator?

Brick Calculator estimates how many bricks you need for a wall or project, including wall thickness, bond pattern, waste percentage, mortar materials, and pallet count. The result is a figure you can take straight to the merchant.

Switch between metric (mm/m) and imperial (in/ft) with one click, pick a brick preset from eight standard sizes, choose single or double wythe, pick a bond pattern (stretcher, running, Flemish, or English), then enter wall dimensions, mortar joint, waste percentage, and optionally a price per brick in one of 13 currencies. The tool loads a sample 5 m × 2.5 m wall on a UK standard brick (215×65 mm) with a 10 mm bed joint, single-wythe stretcher bond, so you see a full result straight away. Output covers brick count without and with waste, course count, brick density per area, pallets to order (500 per pallet), wall area, wall ties for cavity walls, mortar volume with cement bags and sand weight, and total cost.

How to use

1. Enter the wall dimensions — length and height in your preferred unit (feet or meters).
2. Specify brick size and mortar gap thickness, or use standard defaults.
3. View the total bricks needed including waste allowance, plus estimated area coverage.

When to use

• Estimating materials for a garden wall, retaining wall, or boundary fence at a quote stage.
• Costing a feature wall or fireplace surround before you order from the merchant.
• Working out how many extra bricks to keep on site to cover cut bricks and breakage during the build.

Result

You're building a garden wall 5 meters long and 2.5 meters high using standard UK bricks (215×65mm) with 10mm mortar joints. The calculator loads this example and shows you need 741 bricks plus 5% waste = 779 total, across 33 courses and 12.50 m² of wall.

FAQ

Why does the result need a waste percentage on top of the brick count?

Real builds lose bricks to cuts at corners, openings, and reveals, plus accidental breakage on site. The trade norm is 5% for straight walls, 8% to 10% for walls with many openings or curves. The waste field lets you tune that to the job.

What size should I enter for a UK / US standard brick?

UK metric brick: 215 × 65 mm (face) with a 10 mm mortar joint. US modular brick: 8 × 2¼ in with a 3⁄8 in joint. Both sets are the defaults when you switch units. Spanish, Indian, and other regional sizes differ, so check the brick spec sheet.

Does it count a single-skin wall or a double wythe?

Both. Pick "Single wythe" for a veneer or one-brick-thick wall, or "Double wythe" for a structural two-leaf wall — the tool doubles the brick count and adds a collar-joint mortar allowance for you. Bond pattern is handled the same way: Flemish adds roughly 50% to the face count and English adds about 100% because of the alternating header courses.

How accurate is the cost estimate?

It is the brick cost only, brick count multiplied by your price per unit. Mortar, sand, cement, ties, lintels, scaffold, and labour are not included. Treat the figure as the materials line for the bricks themselves, not a finished quote.

Why did I get a slightly different count from my builder?

Two common reasons: (1) your builder may use 60 bricks per square metre as a rule of thumb, which only matches a 10 mm joint exactly; (2) they may already factor waste into that rule. The calculator shows both with and without waste so you can compare.

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