Brick Calculator
Enter your wall area and brick size to estimate the number of bricks needed, including a waste allowance for cuts and breakage.
Results
- Bricks needed
- 1,320 bricks
- Wall area
- 160 sq ft
- Bricks per sq ft
- 7.5
Estimates only. Round up and buy a little extra to account for waste, spills, and breakage.
Enter your wall area and brick size to estimate the number of bricks needed, including a waste allowance for cuts and breakage.
How to use the brick calculator
- Enter the wall length in ft.
- Enter the wall height in ft.
- Enter the brick size.
- Enter the openings to subtract in sq ft.
- Enter the waste factor in %.
- Optionally add a price to estimate the total project cost.
- Read your quantities instantly — no sign-up, and you can print the estimate to take to the supplier.
Worked example
Inputs
- Wall length
- 20 ft
- Wall height
- 8 ft
- Brick size
- Modular (7.5 per sq ft)
- Openings to subtract
- 0 sq ft
- Waste factor
- 10 %
Results
- Bricks needed
- 1,320 bricks
- Wall area
- 160 sq ft
- Bricks per sq ft
- 7.5
Using the example values above, the brick calculator returns 1,320 bricks (bricks needed). Change any field to match your own project and the numbers update instantly.
How much extra should I order?
Always order a little extra. A 5% waste factor suits simple, square projects; 10% is right for most jobs; bump it to 15–20% for irregular shapes, diagonal patterns, or uneven ground. Running short almost always costs more than the leftover material.
Formula
Bricks = wall area ÷ (brick face area + mortar joint), × (1 + waste%).
Frequently asked questions
- How many bricks per square foot?
- A standard modular brick wall uses about 7 bricks per square foot of face including mortar joints; sizes range from 5.5 to 7.5.
- How much waste should I add for brick?
- Add 5–10% for cuts and breakage on a straight wall, and up to 15% for patterns, curves, or older reclaimed brick.
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