How many bricks do I need?

Divide the wall area by the face area of one brick including its mortar joint, then add waste. A standard modular brick works out to about 7 bricks per square foot.

How many bricks are in a square foot?

About 7 modular bricks per square foot of wall with a standard 3/8 inch mortar joint.

How much mortar do I need for brick?

Roughly 7 bags of mortar per 1,000 bricks for a standard 3/8 inch joint. The calculator shows a rough estimate.

Brick Calculator

Work out how many bricks you need for a wall. Enter the wall size and your brick dimensions to get the brick count — including the mortar joint and a waste allowance — plus a rough mortar estimate.

Brick calculator

Unit size includes the mortar joint. The bricks count is exact; the mortar figure is a rough estimate from standard ratios — confirm against your mortar's coverage.

How it's calculated

We work out the face area of one brick including its mortar joint — (length + joint) × (height + joint) — convert your wall area into that many bricks, add a waste allowance, and round up. Mortar is estimated from the standard ratio of about 7 bags per 1,000 bricks.

Frequently asked questions

How many bricks do I need?: Divide the wall area by the face area of one brick including its mortar joint, then add waste. A standard modular brick works out to about 7 bricks per square foot.
How many bricks are in a square foot?: About 7 modular bricks per square foot of wall with a standard 3/8 inch mortar joint.
How much mortar do I need for brick?: Roughly 7 bags of mortar per 1,000 bricks for a standard 3/8 inch joint. The calculator shows a rough estimate.

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<p style="font:12px sans-serif">Brick calculator by <a href="https://howmanycalc.com/brick-calculator/">HowManyCalc</a></p>
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Last updated June 2026.