Brick Calculator

Find how many bricks you need for a wall, including mortar joints and waste.

Wall length

Wall height

Brick length

Brick height

Mortar joint

Waste (%)

Price per brick ($)

Bricks needed (bricks) 1,153

Bricks per ft² (/ft²) 6.55

Total cost ($) 0

Formula: bricks/ft² = 144 ÷ ((brickL + joint) × (brickH + joint))

Step-by-step with your numbers:

1. Values used:

2. Wall length = 20

3. Wall height = 8

4. Brick length = 8

5. Brick height = 2.25

6. Mortar joint = 0.375

7. Waste = 10 %

8. Price per brick = 0 $

10. Bricks needed = 1,153bricks

11. Bricks per ft² = 6.55/ft²

12. Total cost = 0$

Did we solve your problem today?

Estimate the number of bricks for a wall in seconds. The calculator accounts for the mortar joint around each brick and adds a waste allowance for cuts and breakage.

The math behind it

Each brick effectively occupies its own size plus one mortar joint: (brick length + joint) × (brick height + joint).

Divide 144 in² (one square foot) by that area to get bricks per ft², multiply by the wall area, then add waste.

Worked example

A 20 ft × 8 ft = 160 ft² wall with 8×2.25 in bricks and a 3/8 in joint:
unit = (8.375)(2.625) = 21.98 in² → 144/21.98 = 6.55 bricks/ft²
bricks = 160 × 6.55 × 1.10 ≈ 1,154.

FAQ

How many bricks per square foot?

With a standard modular brick and 3/8 in joint, about 6.5–7 bricks per square foot of single-wythe wall.

Why add waste?

Cuts at corners/openings and breakage mean you should order 5–10% extra.

The math behind it

Worked example

FAQ

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