Masonry calculator

Brick calculator

Brick count and mortar-bag planning from wall area, opening deductions and nominal brick face size.

By Feroz Sheikh · Formula MAS-BRICK-001 v1.0.0 · Tested formula

FormulaMAS-BRICK-001v1.0.0

Project inputs

Enter your measurements. Switching units converts the same project, including coverage and unit rates. Package yields keep the unit printed beside each field.

Brick calculator: measurement diagram. Measure wall length and height. Use the unit or module dimensions specified by this calculator.
Measure wall length and height. Use the unit or module dimensions specified by this calculator. View image
Refine measurements and rates at any time. Your current values are included in the material-list PDF.

Calculated result

809bricks

Bricks to order

FormulaMAS-BRICK-001

(wall length × height − openings) ÷ (nominal face length × height) × (1 + waste)

109 ft²

Net wall area

0.148 ft²

Nominal face area

734.8 bricks

Mathematical quantity

Planning estimate, not engineering advice. Confirm site measurements and product specifications. Calculation limits.

This calculator counts bricks and mortar bags from net wall area, opening deductions and nominal brick face. Formula MAS-BRICK-001 v1.0.0. Waste stays an input. Carry the count into an estimate. It does not pick a bond or a structural wythe.

  1. Measure finished wall length and height.
  2. Deduct openings using measured areas when they differ from the defaults.
  3. Confirm the brick's nominal face and the mortar bag yield before ordering.

Size chart

Brick wall chart (modular face, openings, 10% waste)

Face count only. Bond, wythes and ties come from the approved design.

WallPrimaryCheck
10 × 8 ft327 bricks44 ft²
20 × 8 ft809 bricks109 ft²
30 × 8 ft1402 bricks189 ft²
40 × 8 ft1728 bricks233 ft²

Metric example — 6 × 2.4 m brick wall. A 6 × 2.4 m wall with 10% waste returns 1150 bricks. Face count only.

  1. BIA. Modular brick planning uses a nominal face that includes the joint. Bond and wythes stay extras. Brick Industry Association — modular sizes

Add your project costs

Enter supplier prices and any labour, equipment or delivery costs. Pick a currency — badges, inputs, and totals follow.

Costs use the block, brick or mortar rate you type. Construclytic does not fetch masonry prices. Lintels, corners and labour stay separate estimate lines. For GCC projects, select QAR, AED, SAR, KWD, OMR or BHD and enter local supplier rates.

View estimate Quote / invoice Add another item

How this calculator works

A transparent brick calculator takeoff.

This calculator divides net wall area by the selected nominal brick face, then rounds whole bricks and mortar bags after a visible cut allowance.

Modular brick is a different face from CMU. The count is net wall ÷ nominal brick face, then mortar bags from a stated yield. Soldier courses and rowlocks belong on their own lines.

Worked example. Example: a 20 ft × 8 ft wall with one 21 ft² door and two 15 ft² windows has 109 ft² of net area. Modular 8 × 2.67 in nominal faces need 809 bricks after 10% waste and 6 mortar bags at 140 bricks per bag.
See the example inputs and calculated result

This separate example uses the calculator's starting values in imperial units. It stays unchanged when you edit the tool above. Example rates, yields and dimensions are assumptions, not recommendations for your project.

Brick calculator: example inputs
InputExample value
Wall length20 ft
Wall height8 ft
Nominal brick length8 in
Nominal brick height2.67 in
Doors1 count
Windows2 count
Door deduction21 ft²
Window deduction15 ft²
Bricks per mortar bag140 bricks / bag
Waste factor10 %

Example result: Bricks to order — 809 bricks.

(wall length × height − openings) ÷ (nominal face length × height) × (1 + waste)

Use the labelled units above when reproducing this example. To work in metric, switch the calculator to Metric; applicable measurements are converted, while product-specific units remain labelled.

  1. 1. Measure finished wall length and height.
  2. 2. Deduct openings using measured areas when they differ from the defaults.
  3. 3. Confirm the brick's nominal face and the mortar bag yield before ordering.

Field notes that change the number

  • Modular, engineer and queen brick do not share a face. Pick the unit in the yard.
  • Ties, flashing and weeps are extras.
  • A brick veneer on a wood stud wall is not a CMU backup count.

Common mistakes

  • Using CMU 112.5 / 100 ft² on a brick wall.
  • Hiding mortar in the brick count.
  • Ignoring openings that will be soldier-coursed, not deducted.

Need the broader workflow? Read the masonry planning guide.

How-to: How to count CMU and brick

Questions

Questions about brick calculator

Is 7 bricks per square foot assumed?

No. The count uses the entered nominal face, so modular, engineer and king sizes stay explicit.

Does this choose a bond pattern?

No. Running, stack or decorative bonds can change cuts and waste; adjust the allowance for the selected bond.

How many bricks for a 20x8 wall?

A 20 × 8 ft wall with one door and two windows, modular face and 10% waste, returns 809 bricks. Corners and lintels stay extras.

Is this a structural brick count?

No. It is a face-count takeoff. Bond, wythes and ties come from the approved design.

What is the formula ID?

This brick calculator publishes formula MAS-BRICK-001, version 1.0.0. The ID stays on the result and on the estimate line.