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Bricklaying Calculator

Enter wall dimensions, opening deductions and masonry unit sizes for a quick check of bricks or blocks and mortar.

No layout needed

Calculation details

Update the example values below. Results update as you type.

01Measurements
ft
ft
in
ft²
02Material detailsUnit sizes, mix ratios and allowances.
in
in
in
in
kg/m³
kg
%
%
03Rates (optional)
INR
INR/bag
INR/ft³
INR/ft³

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.

BIS product manual (PDF)

These references do not set your calculator inputs or prices. Confirm the exact product, specification and delivered quote before ordering.