Need a quick way to estimate the number of bricks, mortar, and cement needed for a wall?
Our free Brick Calculator makes it simple. Just enter your wall size, brick dimensions, mortar thickness, and wastage — and get clear results with step-by-step calculations.
Brick Calculator
How it works
Bricks per area use the modular size (brick + mortar joint). We subtract opening areas, apply wastage, and estimate mortar by subtracting total brick volume from wall volume (length × height × thickness). Cement and sand come from the chosen mix ratio by volume. Results are approximate and for planning purposes.
Brick Calculator
Compute bricks, mortar, and cement fast — supports metric (mm/m) and imperial (in/ft) systems, includes openings, wastage %, and cement-sand mix estimation.
Wall Length
Wall Height
Brick Size (L × H × D)
Mortar Joint
Wastage %
Cement : Sand Mix
Demo Clear
Enter at least one valid wall dimension.
How It Works
The calculator uses wall dimensions and brick modular size (brick + mortar) to estimate:
- Net wall area (after subtracting windows or doors)
- Total bricks required (with wastage)
- Mortar volume
- Cement bags and sand quantity based on your chosen mix ratio
Core formula:
Bricks = Wall Area ÷ (Brick + Joint size)
Mortar = (Wall Volume – Brick Volume) × (1 + Wastage %)
Example
Example – Metric:
Wall = 4 m × 2.7 m
Brick = 215 × 65 × 102.5 mm
Mortar joint = 10 mm
Wastage = 10 %
➡ Wall area = 10.8 m²
➡ Bricks per m² = ≈ 60
➡ Total bricks = ≈ 660
➡ Mortar = 0.22 m³
➡ Cement = ≈ 5 bags (50 kg each)
➡ Sand = ≈ 0.17 m³
(All values approximate for planning use.)
Why Use This Calculator
✔ Handles metric & imperial units
✔ Adjusts for openings (windows/doors)
✔ Includes wastage allowance and mortar mix ratio
✔ Estimates cement & sand automatically
✔ Mobile-friendly and fast
✔ Ideal for builders, engineers, and DIY projects
Common Brick Sizes
| Region | Size (L × H × D) | Typical Type |
|---|---|---|
| UK | 215 × 65 × 102.5 mm | Standard brick |
| South Africa | 190 × 90 × 90 mm | Maxi brick |
| Australia | 230 × 110 × 76 mm | Standard brick |
| USA | 8 × 2.25 × 3.75 in | Modular brick |
How to Use the Brick Calculator
1️⃣ Choose unit system (Metric or Imperial)
2️⃣ Enter wall length, height, and thickness
3️⃣ Add brick size and mortar joint
4️⃣ Input openings (windows or doors) if any
5️⃣ Set wastage % and cement :sand ratio
6️⃣ Click Calculate to get:
– Bricks required
– Mortar volume
– Cement bags & sand volume
FAQ
Q: Can I use inches and feet?
Yes — switch to Imperial. The calculator automatically converts to metric for accurate results.
Q: What’s the default wastage?
10 %, which you can adjust depending on site conditions.
Q: How accurate are the results?
They’re close for estimation purposes; for structural work, consult an engineer or local standard.
Q: Can I change the mortar ratio?
Yes — simply edit the cement : sand fields (default = 1 : 4).
Q: Does it account for windows and doors?
Yes — enter their width and height under “Openings.