This brick calculator works out how many bricks and how much mortar you need for any wall. Enter the wall size, deduct openings and choose your brick size to get an instant brick and mortar estimate using standard UK brick dimensions.
This brick calculator turns your wall dimensions into a materials list: it works out the wall area, deducts any door and window openings, then multiplies by the bricks-per-square-metre figure for your chosen brick size and adds a mortar estimate. It saves you doing the maths by hand and helps you order the right number of packs.
| Wall type | Bricks per m² | Notes |
|---|---|---|
| Half-brick (single skin) | ~60 | Standard 215×102.5×65 mm brick, 10 mm joints |
| One-brick (double skin) | ~120 | Two skins, e.g. a solid wall |
| Cavity wall (brick + block) | ~60 + blocks | Outer brick skin plus a block inner leaf |
A single-skin garden wall 5 m long and 1.8 m high has an area of 9 m². At about 60 bricks per m² that is 540 bricks, plus roughly 5–10% for cuts and breakages – so order around 570–600 bricks. This calculator does that sum instantly and adds the mortar.
Building in masonry? See the mortar calculator, the concrete block calculator for the inner leaf, and the paver calculator for paths and patios.
This brick calculator multiplies your net wall area (after deducting openings) by the number of bricks per square metre for your chosen brick size, then adds your waste allowance and a mortar estimate to give the total bricks and mortar bags you need.
For standard UK bricks (215×102.5×65 mm) with 10 mm mortar joints, you need about 60 bricks per m² for a half-brick (single skin) wall, or about 120 per m² for a one-brick (double skin) wall.
Roughly 7 bags of 25 kg mortar mix for 1000 standard bricks, depending on joint thickness and wastage.
A typical pack or pallet of facing bricks holds around 400–500 bricks, though it varies by manufacturer and brick size. Always check the pack quantity before ordering so you buy enough packs.
Allow about 5% extra for cuts at openings, breakages and the odd damaged brick. The waste field in this calculator lets you add this on automatically.
Calculate how much concrete you need for slabs, footings, columns and walls in cubic yards or metres.
OpenWork out the cement, sand and aggregate (ballast) quantities for a concrete mix by volume and ratio.
OpenCalculate the concrete volume and number of bags needed for strip, pad and pier footings.
Open