How the Brick Calculator Works

Enter your wall length and height, pick your brick size and calculator divides wall area by the coordinating face of one brick. A standard UK metric brick measures 215 x 102.5 x 65mm and with a 10mm mortar joint its coordinating face becomes 225 x 75mm. That produces figure whole UK trade works from, 60 bricks per square metre of single skin wall in stretcher bond.

For quick mental checks, 1,000 standard bricks cover roughly 16.7 m² of single skin wall or around 15.9 m² once 5 percent wastage is set aside.

Bricks Per Square Metre by Bond and Wall Type

The linear metre figures matter for garden walls, where a soldier course cap or a brick on edge finish is a separate line on the order that area maths alone will miss.

Metric vs Imperial Bricks

Older UK properties were built with imperial bricks, which are larger than modern metric standard. Common imperial sizes such as 228 x 70mm need fewer bricks per square metre and mixing metric bricks into an imperial wall shows immediately in course. For extensions and repairs on pre 1970s homes, measure an existing brick before ordering and consider reclaimed or imperial specials so the new work courses in with the old.

Brick prices vary widely with type. Machine made facing bricks run roughly £400 to £900 per 1,000, engineering bricks £600 to £1,200, reclaimed bricks £800 to £1,500 and handmade bricks £1,000 to £2,500. On a big elevation the brick choice moves the budget more than the labour rate.

Wastage, Batches and Pallets

Add 5 percent for a straightforward stretcher bond wall and 10 percent for cut heavy work such as decorative bonds, curved walls or lots of openings. Facing bricks ship in packs of roughly 400 to 500, so round to whole packs.

Two trade habits worth copying. First, check every pack carries the same batch number, because shade varies between firings. Second, blend bricks from at least three packs as you lay, which spreads any subtle colour variation invisibly through the wall instead of leaving visible banding.

Worked Example: 6m x 2.4m Extension Wall

A side extension wall 6m long and 2.4m high in stretcher bond facing brickwork:

• Gross wall area: 6m x 2.4m = 14.4 m²
• Net area (minus 1.6m² door & 0.8m² window): 12 m²
• Base bricks (at 60 per m²): 720 bricks
• Total order (with 5% waste): 756 bricks (order two 400-packs)

If the extension is a cavity wall, this covers the outer leaf only. The inner blockwork leaf, insulation and wall ties are calculated separately and our Brick Block Calculator UK handles the combined brick and block quantities with mortar for exactly that job.