Brick Calculator (Bricks & Cement Bags)
Number of bricks, mortar, cement bags and sand for a wall — from its length, height and thickness.
Result
How to use
- 1
Enter the wall length and height in feet and choose the thickness.
- 2
Pick the brick size and mortar mix, and subtract openings.
- 3
See the number of bricks, cement bags (50 kg) and sand needed.
Questions
How many bricks are needed for 100 sq ft of wall?
With traditional 230 × 110 × 75 mm bricks and 10 mm joints, a 9-inch wall needs about 900 bricks per 100 sq ft and a 4½-inch wall about 450. Add 5% for breakage.
How much cement is needed for brickwork?
Roughly 1 to 1.4 bags (50 kg) per cubic metre of brickwork in 1 : 6 mortar, depending on joint thickness and whether the frogs are filled. This calculator assumes 10 mm joints, unfilled frogs, dry mortar volume = wet × 1.33 and cement at 1,440 kg/m³ — treat it as an estimate.
Which mortar ratio should I use?
1 : 6 is common for 9-inch load-bearing and outer walls; 1 : 4 or 1 : 5 for 4½-inch partition walls that need extra strength. Always follow your engineer's specification.
About this Bricks tool
Brick Calculator (Bricks & Cement Bags) — Number of bricks, mortar, cement bags and sand for a wall — from its length, height and thickness. It is one of 200 free tools on namasivayam.in, made by software engineer Namasivayam Vadivelan for everyday use in India.
Everything is calculated instantly in your browser: nothing you type or upload is sent to any server, there is no sign-up, and it works on mobile and desktop. Enter the wall length and height in feet and choose the thickness.
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Results are estimates to help you plan. They are not financial, tax or medical advice.