Brick Quantity Calculator

Calculate the number of bricks and mortar needed for a wall based on dimensions, brick size, and mortar joint width.

Inputs

Wall Length

ft

Wall Height

ft

Brick Length

in

Brick Height

in

Mortar Joint Width

in

Window/Door Openings

sq ft

Waste Factor

%

Tab to move between fields

Results

Total Bricks Needed

1,102 bricks

Net Wall Area160 sq ft

Bricks Per Sq Ft6.6

Mortar Volume7.71 cu ft

Mortar Bags (80 lb)16 bags

How to Use This Calculator

Enter the wall length and height in feet.
Set the brick length and height in inches (standard US brick: 7.625×2.25).
Enter the mortar joint thickness (typically 3/8 inch for standard construction) and subtract any window/door opening area.
Input a waste factor (5% standard, 10% for complex patterns).
Review the total brick count, mortar volume, and bag quantity for your order.

How the result changes with Wall Length

Wall Length	Total Bricks Needed
51	2,807 bricks
176	9,685 bricks
325	17,883 bricks
450	24,761 bricks

What each input means

Wall Length: Total horizontal length of the wall.
Wall Height: Height of the wall from footing to top.
Brick Length: Length of a single brick (standard modular = 7.625 in).
Brick Height: Height of a single brick (standard modular = 2.25 in).
Mortar Joint Width: Width of mortar joints (standard = 3/8 inch).
Window/Door Openings: Total area of window and door openings to subtract.
Waste Factor: Extra bricks for breakage and cuts (typically 5-10%).

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Wall Length = 20, Wall Height = 8, Brick Length = 8, Brick Height = 2.25 = 7 input(s) provided
Calculate Total Bricks Needed
Total Bricks Needed
1102 = 1102
Calculate Net Wall Area
Net Wall Area
160 = 160
Calculate Bricks Per Sq Ft
Bricks Per Sq Ft
6.6 = 6.6

Engine last updated August 6, 2026. Checked against 1 independently-derived test — how we verify calculators.

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