Brick Calculator
Enter the wall length and height, choose half-brick or one-brick thickness and pick a brick size — standard metric 190 × 90 × 90 mm, modular/Bangladesh 240 × 115 × 70 mm, or your own. Deduct doors and windows, set the mortar joint and wastage, and get the number of bricks to order, wet mortar volume and the cement bags and sand needed for your mortar mix.
How to use the Brick Calculator
- Choose metres or feet and enter the wall length and height.
- Select half-brick or one-brick thickness.
- Pick a brick size or enter a custom size in millimetres.
- Enter the area of doors and windows, the mortar joint and wastage.
- Choose a mortar mix and press Calculate bricks.
Features
- Standard metric, Bangladesh/modular and custom brick sizes
- Half-brick and one-brick walls
- Openings deduction and wastage allowance
- Mortar volume plus cement bags and sand for 1:4, 1:5 or 1:6 mortar
- Bricks per m² shown for checking quotes
Benefits
- Order the right number of bricks the first time
- Estimate mortar materials for a budget
- Compare the brick count for different sizes before you buy
Frequently asked questions
How many bricks are in one square metre?
For a half-brick wall: 1 ÷ ((brick length + joint) × (brick height + joint)). With 240 × 70 mm bricks and 10 mm joints that is 1 ÷ (0.25 × 0.08) = 50 bricks per m²; a one-brick wall needs twice as many.
How is the mortar quantity worked out?
Wet mortar = wall volume − the volume of the bricks. Cement and sand are then estimated using a dry-volume factor of 1.33 and your chosen mix ratio.
How much wastage should I allow?
Around 5% for careful work and up to 10% where many cuts, breakages or rough handling are expected.
Are the results exact?
They are estimates. Bond pattern, frogged bricks, joint thickness on site and corners all change the real quantities.
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