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Brick Calculator

Estimate the number of bricks needed for a wall from wall area, brick dimensions, mortar joint and waste.

Free online toolWorks in your browserNo sign-up required

Brick Calculator

Enable JavaScript to use the interactive calculator; the example and formula are described below.

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Concrete & Masonry

Concrete volume, slabs, footings, blocks, bricks, pavers and related material quantities.

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How to use this brick calculator

Enter the values requested above and select Calculate. Change any input to compare another scenario. The calculation runs locally in your browser and does not require an account.

Formula and method

Approximate bricks = wall area ÷ face area per brick-and-joint module, increased by the selected waste allowance.

Example

A standard modular brick plus mortar joint covers only a fraction of a square foot, so a modest wall can require hundreds of bricks.

What this calculator is useful for

Estimate the number of bricks needed for a wall from wall area, brick dimensions, mortar joint and waste. The result is intended for quick estimates, checking arithmetic and comparing scenarios. When a result affects a contract, tax filing, medical decision, building-code requirement or other high-stakes situation, verify the result with the appropriate professional or authoritative source.

Brick Calculator: a practical example

A 200-square-foot wall made from 7.625-by-2.25-inch bricks with 3/8-inch joints needs more units after adding the 5% waste allowance.

What the result means

Joint thickness changes the effective face area of a brick and therefore the brick count.

Limits to consider

Allow for openings, corners, cuts, bond pattern, and the exact masonry unit before ordering.

Related tools: Board Feet Calculator · Concrete Block Calculator

Frequently asked questions

What does the Brick Calculator calculate?

Estimate the number of bricks needed for a wall from wall area, brick dimensions, mortar joint and waste.

How does the Brick Calculator work?

Approximate bricks = wall area ÷ face area per brick-and-joint module, increased by the selected waste allowance.

Is the Brick Calculator free to use?

Yes. ERICH Calculators is free to use and does not require an account.

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Method, assumptions & corrections

See how formulas, sources and limitations are handled across ERICH Calculators.