Work out aac block quantity instantly with clear inputs, formula shown and shareable results.
Autoclaved aerated concrete blocks are laid in thin-bed adhesive rather than mortar, so the joint adds almost nothing to the coursing and blocks per square metre is simply one divided by the face area of a block. A five percent allowance covers cutting at openings, and adhesive runs about 3.5 kg per square metre of wall.
Blocks per m²
Blocks/m² = 1 / (block length m x block height m)
Quantity
Blocks = wall area x blocks per m² x 1.05
Blocks/m² = 1 / (block length m x block height m). Autoclaved aerated concrete blocks are laid in thin-bed adhesive rather than mortar, so the joint adds almost nothing to the coursing and blocks per square metre is simply one divided by the face area of a block.
A thin-bed joint is 2-3 mm rather than 10 mm, and AAC blocks are dimensionally accurate enough to allow it. That is a large part of the material saving the system claims.
This calculator takes 4 inputs: Wall length, Wall height, Block length, Block height. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.