Brick & Block Quantity Estimator
Estimate bricks or blocks for rectangular wall faces with openings, mortar joints, waste and optional full-pack quantities.
Estimate bricks or blocks for one layer of up to 10 rectangular walls. Supply the visible face dimensions and mortar joints; this tool does not choose a product or wall thickness.
- Net wall area
- 12 m²
- Modular face coverage per unit
- 0.02 m²
- Area including waste
- 13.2 m²
- Units before waste
- 600
- Units including waste
- 660
- Whole packs to buy
- 7
- Total units to order
- 700
- Extra units from pack rounding
- 40
- Ordered modular coverage
- 14 m²
Areas display up to six decimal places; tiny values use scientific notation. Counts round up from validated decimal inputs without discarding positive remainders.
Method and limitations
Net area is the sum of wall rectangles minus openings. Module area = (face length + vertical joint) × (face height + horizontal joint). Divide net area plus waste by the module area and round up, then round to full packs if requested.
Approximate single-layer face estimate. Depth, bond, corners, returns, piers, edge joints, courses, cuts and reusable offcuts are not modelled. Units are pooled across walls. Joint modules include an edge allowance that may differ from an actual layout. Check a course plan and supplier dimensions before ordering; this is not a structural design or certification.
International foot definition: NIST
Calculation stays in this browser.
Check the stated data sources and assumptions before relying on a result.