Brick Calculator
Home & ConstructionCalculate how many bricks a wall needs, plus the cement and sand for the mortar.
Runs entirely in your browser — nothing is uploaded
Features
- Bricks for any wall size and thickness.
- Indian, modular, UK and US brick sizes.
- Mortar volume with cement bags and sand.
- Adjustable joint thickness and wastage.
- Runs in your browser.
How to use the Brick Calculator
- 1Enter the wall length and height — a wall is measured by its face.
- 2Choose the wall thickness and brick size.
- 3Set the mortar joint and wastage, then read the brick count.
Frequently asked questions
How many bricks are in a square foot of wall?
For a 9-inch wall with standard Indian bricks and 10 mm joints, roughly 11 to 12 bricks per square foot of wall face. A 4.5-inch partition is about half that. Thickness matters more than anything else here.
Does the mortar joint really change the count?
Yes, noticeably over a large wall. A 190 mm brick with a 10 mm joint occupies 200 mm, so the joint is 5% of the length. Going from 10 mm to 15 mm joints removes a meaningful number of bricks — and weakens the wall if it is done carelessly.
How much wastage should I allow?
About 5% for breakage in transport and handling, more if the bricks are hand-made and vary in size. Count what actually arrives: short deliveries are common enough that a site count before the last load is worth the time.