Enter wall dimensions, opening deductions and masonry unit sizes for a quick check of bricks or blocks and mortar.
No layout needed
How the quantities are calculated
Follow the method, check the example and review the assumptions.
The method
From measurements to materials
We divide net wall volume by the brick or block module to get the unit count. The space left after the solid units becomes wet mortar, which is then split into cement and sand.
An example
Put the numbers in context
A 4 m × 3 m wall at 230 mm thickness contains 2.76 m³ before openings. Unit sizes and joints determine the masonry count and remaining mortar.
This illustrates the method; your inputs determine your result.
Assumptions to check
Identical walls share the entered dimensions, openings, unit size and joint thickness.
Mortar ratio and dry-volume factor are editable project assumptions.
Limits of this calculation
Bond pattern, special units and unusually uneven joints are not inferred. Structural reinforcement must be supplied from approved project information.
Common questions
Do I need to calculate the mortar separately?
No. This workflow uses the same wall and masonry-unit measurements to calculate mortar, cement and sand.
Can I use blocks instead of bricks?
Yes. Choose the masonry unit and enter its actual dimensions and price.
Product references for India
Specifications, pack sizes and sources to check before buying.View detailsHide details
Masonry units
Fly ash brick size reference
Modular size example
190 × 90 × 90 mm
Reference
BIS product manual for IS 12894
Specification & price notes
The manual lists several sizes. Measure the actual supplied brick and enter the joint thickness separately; this size is not a specification for every wall.
Source checked 30 Oct 2026. Enter your supplier’s price separately.