Brick Calculator
Number of bricks and mortar (cement + sand) for a wall — enter its length, height and thickness.
No login required · Standard or modular brick size
Standard estimate treating each brick as a box with mortar on all sides — add 5% for breakage/wastage when ordering. Not a substitute for a detailed wall schedule.
How this is calculated
Wall volume = (Length × Height − opening area) × thickness. The volume of one brick with mortar is its own dimensions plus the mortar joint added on each side; dividing wall volume by this gives the brick count.
Mortar volume is the wall volume left over after subtracting the bricks' own (mortar-free) volume. That mortar volume is increased by the standard 1.33 dry-volume factor, then split by the cement:sand ratio and converted to bags (1 bag = 50 kg = 0.0347 cum) the same way as the concrete calculator.
Common questions
How many bricks are needed per square foot of wall?
For a standard Indian brick (9×4.25×3 in) with 10mm mortar joints, a 9-inch wall needs roughly 10-11 bricks per square foot, and a 4.5-inch (half-brick) wall needs roughly 5-5.5 bricks per square foot.
How do you calculate the number of bricks for a wall?
Divide the wall volume (length × height × thickness) by the volume of one brick including mortar on all sides.
What mortar ratio is used for brickwork?
1:6 (cement:sand) is the most common ratio for general brickwork in India. 1:4 is used for load-bearing or higher-strength requirements.
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