ClarityHow to use this tool
- Enter area to cover, brick length, brick height, mortar joint, waste allowance.
- Select Calculate to view the result.
- Check the method and assumptions below before using the result.
Input reference and sample values
Use the units and choices shown for each field. Sample values are provided for practice, not as recommendations.
| Input | Format and units | Sample |
|---|---|---|
| Area to cover | Numeric value. Unit: m². Must be greater than zero. | 20 |
| Brick length | Numeric value. Unit: mm. Must be greater than zero. | 215 |
| Brick height | Numeric value. Unit: mm. Must be greater than zero. | 65 |
| Mortar joint | Numeric value. Unit: mm. Zero or positive. | 10 |
| Waste allowance | Numeric value. Unit: %. Zero or positive. Maximum: 100. | 10 |
Result for these sample inputs
1304 bricks
Select Try the example in the form to load these values and calculate them again. This replaces the current form inputs. Compare the result with the method and worked explanation below.
The method, explained
Bricks = ceil[area × 10⁶/((brick length + joint)(brick height + joint)) × (1 + waste/100)].
Using area to cover = 20 m², brick length = 215 mm, brick height = 65 mm, mortar joint = 10 mm, waste allowance = 10 %, the result is 1304 bricks. Change these example inputs to match your task; use the method above to check each step.
What to keep in mind
One visible layer only; bonds, corners and structural wall thickness are excluded. A material-quantity estimate, not a structural design or building-code check. Confirm site measurements, supplier coverage and waste before ordering.
Methodology maintained by ClarityKit. How these tools are built and checked.