Calculators
Clear inputs. Useful results.
Enter your dimensions. Formulas, assumptions and quantities are shown with every calculation.

Calculation result
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Calculated from your supplied dimensions.
Calculation steps
Calculation formula
Net area / ((face width + joint) × (stone height + joint)) × layers × (1 + waste). Dimensions are converted to metres; quantity is rounded up.
Preliminary estimate. Not construction documentation. Professional review required.