Brick and block wall calculator
The wall rises course by course, joints and all; doors and windows are cut out of the masonry.
The drawing
What you need
| Material | Calculated need | To buy | Unit price | Total |
|---|---|---|---|---|
| Bricks / blocksRed brick, 12 holes, 30 × 20 × 15 | 173 pieces | 173 pieces | ||
| Mortar cementCPJ 42.5 cement — 50 kg bag | 54.86 kg | 2 bags45.14 kg left over | ||
| Mortar sandCrushed quarry sand 0/3 — m³ | 0.17 m³ | 0.5 m³0.33 m³ left over | ||
| Indicative total | ||||
Working out prices…
The formula
1 ÷ ((0.3 + 0.01) × (0.2 + 0.01)) = 15.36 units/m²; 10.67 m² × 15.36 × 1.05 = 173 units. Mortar: 0.157 m³.
The assumptions
- 1 cm joints, 5 % breakage.
- Mortar at 350 kg/m³.
- A partition or infill wall, not a load-bearing wall.
- A qualified engineer or architect must design and approve every structural element — slabs, beams, columns, foundations, reinforcement and load-bearing walls. Our calculations give indicative quantities and budgets, never dimensions.
How to use it
Measure the wall’s length and height.
Choose the brick or block and count the openings.
Read the number of units with breakage, then the mortar’s cement and sand.
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