BuildCalc
Brick Calculator
Material Calculators

Brick Calculator

Calculate bricks and mortar needed for walls, patios, and pathways.

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How to calculate bricks for a wall or patio

  1. Enter the wall or surface dimensions — length and height for a wall, length and width for a patio or path.

  2. Choose the brick size: standard (8×3.75×2.25"), modular (7.625×3.625×2.25"), or queen (9.625×2.75×3.625").

  3. Set the mortar joint width. A 3/8-inch joint is standard for most brickwork; thicker joints suit rustic styles.

  4. Read the brick count and mortar bag estimate. Add 5–10% for breakage and cuts at corners and openings.

Common uses

  • Building a garden wall, raised planter, or fire pit surround
  • Calculating bricks for a driveway, patio, or walkway
  • Estimating a brick veneer accent wall on a house exterior

Frequently asked questions

How many bricks do I need per square foot?
Standard bricks laid with a 3/8-inch mortar joint cover about 6.75 bricks per square foot. Modular bricks run about 7 per square foot. The calculator adjusts automatically for your joint size.
How many bags of mortar do I need per 100 bricks?
A 70 lb bag of mortar mix covers roughly 40–50 bricks, depending on joint thickness. For 100 bricks, plan on about 2–3 bags plus 10% extra.
What's the difference between brick and concrete block?
Bricks are solid clay units, typically used for facing and decorative work. Concrete blocks (CMU) are larger, hollow, and used for structural walls. They're calculated differently — use a separate block calculator for CMU.

Not sure whether to DIY this project?

Read our project-by-project guide on when to hire a contractor vs. do it yourself.

Read the guide →

About this calculator

Enter your wall or surface dimensions to calculate exact brick count and mortar bags. Supports standard, modular, and queen brick sizes with adjustable mortar joint width.

All results are estimates. Verify quantities with your local supplier and confirm measurements before purchasing materials. Requirements vary by region and project type.

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