Calculator
Brick Calculator
Calculate bricks, cement bags, and sand — wall size in m or ft, brick size in mm or inches.
Inputs
Unit system
Results
Wall volume
3.45m³
Number of bricks
1,725bricks
50 kg cement bags
5bags
Sand for mortar
32.01cft
How this is calculated
Formula
- Convert ft/in → m/mm if imperial is selected
- wall_volume = L × H × T
- brick_with_mortar = (l+j) × (w+j) × (h+j)
- bricks = ceil(wall_volume ÷ brick_with_mortar)
- mortar_wet = wall_volume − bricks × brick_solid_volume
- mortar_dry = mortar_wet × 1.33
- Split mortar by cement:sand ratio → bags & sand (cft)
Assumptions
- Choose Metric (m, mm) or Imperial (ft, in) for wall and brick sizes.
- Default brick size is modular Indian 190 × 90 × 90 mm.
- Brick count uses brick size plus mortar joint on each face.
- Mortar wet volume = wall volume − (bricks × solid brick volume); dry × 1.33.
- Openings (doors/windows) are not deducted — subtract their volume manually.
- Add ~5% extra bricks for breakage on site.