GharCost

Calculator

Brick and Block Calculator

Enter the wall size and thickness. It gives the number of bricks or AAC blocks, and the cement and sand needed for the mortar.

Your wall

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The formula

Wall volume = Length x Height x Thickness Brick with mortar = 200 x 100 x 100 mm (standard 190 x 90 x 90 brick + 10 mm mortar joint) Bricks = Wall volume / volume of one brick with mortar Mortar volume = Wall volume - (bricks x actual brick volume) Cement and sand from the mortar ratio, usually 1:6 ROUGH CHECK 9 inch wall about 500 bricks per cubic metre 4.5 inch wall about 55 bricks per square metre

What this assumes

  • Standard Indian brick is taken as 190 x 90 x 90 mm. Local brick sizes vary, so check yours.
  • Mortar joint is taken as 10 mm.
  • No wastage added. Bricks break in handling, so add 5%. For AAC blocks add 3%.
  • Openings for doors and windows are not deducted unless you enter them.
  • Plaster is a separate cost and is not included here.

Common questions

How many bricks for a 10 x 10 feet wall?

For a 4.5 inch wall, roughly 500 to 550 bricks. For a 9 inch wall, roughly 1,000 to 1,100. Enter your exact size for the real figure.

AAC blocks or red bricks, which is cheaper?

AAC blocks cost more per piece but you need far fewer, use less mortar, and the walls are lighter so your structure needs less steel. On a full house the total often comes out similar or slightly lower. AAC also keeps the house cooler.

What mortar ratio should I use?

1:6 (one part cement, six parts sand) for normal brickwork. 1:4 for load-bearing walls and outer walls that face rain.

Do I need to soak bricks before laying?

Yes, for red clay bricks. Dry bricks pull water out of the mortar and the joint stays weak. AAC blocks are the opposite, they should not be soaked.

Rates last reviewed: August 2026 Full methodology Disclaimer