Brick Calculator

Use the face that will show in the wall — the length and height you see once it’s laid, not the depth. A standard Serbian clay brick (puna opeka) is 250 × 120 × 65 mm, so laid as a stretcher the face is 25 × 6.5 cm.

The joint spaces bricks apart, so each one effectively covers a slightly larger area than its own face. Ignoring it overestimates the count by several percent. A 10 mm joint is typical for brickwork; blockwork often uses similar.

10% is a sensible default for a straightforward wall. Add more — 12–15% — for lots of corners, openings or a decorative bond with many cuts, and less if the wall is simple and you’re experienced.

No — it counts bricks only. Mortar volume depends on joint thickness, brick size and wall thickness; as a rough guide, a single-brick wall uses roughly 0.02–0.03 m³ of mortar per m². Treat that separately.

Yes, but multiply the result by the number of leaves. A cavity or double-brick wall is effectively two walls, so double the count and remember it also needs ties.

Multiply wall length by height, then subtract large openings like doors and windows. The area calculator can do this for irregular shapes; feed the net figure in here.

Yes — the maths is identical, only the face size changes. Enter the block’s face dimensions and joint and the tool handles it. Larger faces simply produce a smaller count.

You buy bricks in whole units, and running short mid-job means a second trip and a possible colour-batch mismatch. Rounding up, plus the waste margin, keeps you covered.

No. The calculation runs entirely in your browser; nothing is sent anywhere and analytics never receives your figures.