Brick & Mortar Calculator
Estimates the brick count from the wall area and the brick size including the mortar joint, then back-calculates the mortar volume and the cement and sand required. A half-brick wall is one brick width thick; a one-brick wall is one brick length thick.
Disclaimer：Results are produced by deterministic formulas and are intended for quantity estimating and option comparison only. A qualified engineer must verify them against the project specification, design documents and actual site conditions before use. The author accepts no liability for any loss arising from their use.
ASSUMPTIONS
RESULT
CALCULATION
METHOD
Bricks per square metre
n = 1 / ((Lbrick + t) × (Hbrick + t)), where t is the mortar joint; wet mortar volume = wall volume − solid brick volume; the dry volume is multiplied by 1.33 and then split into cement and sand by the mix ratio.- A half-brick wall is taken as one brick width thick and a one-brick wall as one brick length thick, the convention used in Commonwealth and international practice.
- Brick sizes vary considerably by origin (China 240 × 115 × 53, international 215 × 102.5 × 65); always use the size actually supplied.
- The mix ratio and wastage allowance are empirical values; final quantities must be checked against the masonry method statement.
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