Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- One exposed wythe using a nominal repeating module. Returns an estimate, not a bond layout; subtract openings first. Quantity estimate only. Confirm actual dimensions, openings, cutting patterns and supplier specifications. No structural design or code-compliance assessment.
Example Calculation
- Net wall face area: 10 m²
- Brick face length: 200 mm
- Brick face height: 100 mm
- Joint width: 10 mm
- Waste allowance: 5 %
10 m² with a 210×110 mm nominal face and 5% waste gives 455 bricks.
Frequently asked questions
How do I use this calculator?
Enter net wall face area, brick face length, brick face height, joint width, waste allowance. The result updates automatically. Use Reset to restore the example values.
What method does it use?
quantity=ceil(area/((length+joint)(height+joint)) × 10⁶ × (1+waste)).. One exposed wythe using a nominal repeating module. Returns an estimate, not a bond layout; subtract openings first. Quantity estimate only. Confirm actual dimensions, openings, cutting patterns and supplier specifications. No structural design or code-compliance assessment.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.