Net wall area
Net area = gross wall area − openings
Openings are removed before either brick quantity method is applied.
Brick formulas
How the brick count is calculated.
Wall and opening dimensions convert to canonical units first. The selected product method then converts net masonry area into a brick equivalent.
Manufacturer rate
Theoretical bricks = net area × manufacturer rate
The entered product rate is authoritative and is not reconstructed from dimensions.
Dimensions and joint
Module area = (brick length + joint) × (brick height + joint)
Theoretical bricks equal net area divided by module face area.
Extra bricks
Adjusted equivalent = theoretical bricks × (1 + allowance %)
Only the final purchasable brick count is rounded up.
Measure and specify
Use the product information you can verify.
Measure the wall
Multiply width by height for each rectangular wall. Multiple mode supports repeated identical walls with a quantity.
Subtract openings
Doors and windows reduce the masonry area when you choose to subtract them. Their combined area must stay below gross wall area.
Actual vs nominal size
Product names such as Modular, Queen or Utility do not guarantee one universal size. Use the actual dimensions stated for the selected brick.
Brick size and joints
The simple module method adds the entered joint to both brick face dimensions. It does not reproduce detailed coursing or bond-layout tables.
Manufacturer rates
When product documentation publishes bricks per square foot or square meter, enter that rate instead of deriving another value from dimensions.
Mortar
Mortar quantities are not included in this calculator. Mortar planning needs additional geometry and assembly information.
Before you order
What this brick estimate includes
- Walls and openings are modeled as non-overlapping rectangles.
- Manufacturer rates come only from the value entered for the selected product.
- The dimensions method uses actual brick face dimensions and one uniform horizontal and vertical joint thickness.
- The 5% allowance is editable and never changes automatically for a bond pattern or geometry.
- This is an area-based quantity estimate, not structural design or coursing optimization.
- Mortar, sand, cement, reinforcement, ties, foundations, labor, cost, weight and pallets are not included.
Product dimensions and published rates matter
Brick Industry Association guidance distinguishes actual dimensions, nominal dimensions, mortar-joint assumptions and published unit rates. Manufacturer product data should remain the source of truth.
The 5% starting allowance follows the contract’s BIA-based general planning guidance and remains user-editable. No brick format or manufacturer rate is prefilled.
Primary references
Brick questions
Frequently asked questions
How many bricks do I need per square foot?
The rate depends on the actual brick, mortar joint and manufacturer specification. Use the published bricks-per-square-foot rate for your exact product when available.
Are all standard bricks the same size?
No. Brick names and dimensions can vary by manufacturer, so this calculator does not assign universal dimensions to names such as Standard, Modular, Queen or Utility.
Should I subtract windows and doors?
Subtract them when you want their area removed from the net masonry surface. Keep enough extra material for cuts and site conditions through the separate allowance.
Does mortar joint size affect brick count?
Yes in the dimensions method. The calculator adds one entered joint thickness to both face dimensions, but actual coursing and joint adjustment can still change the result.
How much extra brick should I order?
Measivo starts at 5% for breakage, cuts and jobsite waste. Adjust it for the project and follow supplier guidance.
Does this calculator include mortar?
No. Mortar quantities are not included because they require additional brick, joint and masonry-configuration information.
Should I use actual or nominal brick dimensions?
Use the actual or specified face dimensions for the product. A nominal name can include a joint convention and may not equal the physical brick dimensions.
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