How many AAC blocks are in 1 m³?

A 600×200×200 mm AAC block has a volume of 0.024 m³, so about 42 blocks make 1 cubic metre before mortar joints; with a joint it is roughly 40 blocks per cubic metre.

How do I calculate blocks for a wall?

Multiply wall length by height by thickness for the wall volume, then divide by the block size including its mortar joint. Add 5 percent for wastage.

Which is better, brick or AAC block?

AAC blocks are lighter, larger and faster to lay with less mortar, while clay bricks are cheaper per piece and widely available. The calculator handles either.

Masonry Calculator (India)

Masonry Calculator

Count the bricks or blocks for a wall and the mortar cement and sand — for clay brick, fly-ash brick, AAC blocks or concrete blocks. Pick a block type and enter the wall size; thickness presets to the block, and you can adjust the joint and mortar ratio.

Wall & block

Block type

Wall measured in

Wall length ft

Wall height ft

Wall thickness mm

Mortar joint mm

Mortar ratio

Wastage 5%

How it's calculated

The wall volume is length × height × thickness. Each unit occupies its size plus the mortar joint, so the count is the wall volume divided by that figure. The leftover is mortar, scaled by 1.33 to dry volume and split by your cement:sand ratio. AAC blocks are larger and use far less mortar than clay bricks.

Count = wall volume ÷ (block + joint). Mortar = wall volume − block volume, then ×1.33, split by ratio.

Just one standard brick wall? The brick calculator is simpler. Totalling many walls? Add each as a brickwork item in the BOQ estimator.

Frequently asked questions

AAC blocks per m³?

About 40 of the 600×200×200 size, allowing for joints.

Do blocks need less mortar?

Yes — larger units mean fewer joints, so AAC and concrete blocks use noticeably less mortar than brick.

What joint thickness?

10 mm is standard for brick and conventional block mortar; thin-bed AAC adhesive can be much less.