Brick Calculator
Calculate the number of bricks for a wall, plus cement and sand for mortar, with a cost estimate.
Built & reviewed by Ankit Madia, Founder & Markets Trader
Brick and Mortar Calculator
This calculator tells you how many bricks a wall needs and how much cement and sand to buy for the mortar. Enter the wall length, height and thickness, pick the brick size, joint thickness and mortar mix, and it returns the brick count plus the cement bags and sand — with an optional cost estimate.
How Bricks Are Counted
Bricks = Wall volume / (brick + mortar joint) volume
Mortar volume = Wall volume − (bricks × solid brick volume)
Dry mortar = Mortar volume × 1.33
Each brick occupies its own size plus a share of the mortar joint around it. Subtracting the solid brick volume from the wall volume leaves the mortar, which is scaled up by 1.33 to account for shrinkage, then split by the chosen cement to sand ratio.
Common Brick Sizes in India
| Type | Size (L×W×H) | With 10 mm joint |
|---|---|---|
| Modular (IS) | 190 × 90 × 90 mm | 200 × 100 × 100 mm |
| Traditional | 230 × 110 × 75 mm | 240 × 120 × 85 mm |
| Traditional (thin) | 230 × 110 × 70 mm | 240 × 120 × 80 mm |
Practical Notes
- Add about 5% extra bricks for breakage and cutting.
- A 9 inch (230 mm) wall is load bearing; a 4.5 inch (115 mm) wall is a partition.
- Mortar is typically 20 to 25% of the wall volume.
- Plaster is calculated separately from the wall face area.