keencalculator
  1. Home
  2. Home & Construction
  3. Brick Calculator

Brick Calculator

Enter the wall’s length and height, the face size of your brick and the mortar joint to find how many bricks to order. Openings can be subtracted, and a waste allowance covers breakage and cuts.

Quick examples

Total area of doors and windows.

US modular brick is 7⅝ × 2¼ in on the face.

%

5–10% covers breakage and cuts.

$
Your numbers stay in your browser. Nothing is uploaded.
Bricks needed906
Bricks per square foot
6.86
Wall area
120 ft²
Brick cost
$679.50

Saved setups

Save a set of inputs you reuse — your usual rate, your loan, your room sizes — and load it back in one tap.

    Your recent calculations

    Results you calculate here are kept on this device so you can come back to them.

      Formula

      Wall area = length × height − openings
      Bricks per sq ft = 144 ÷ ((brick length + joint) × (brick height + joint)), in inches
      Bricks = wall area × bricks per sq ft × (1 + waste %), rounded up

      How to use it

      1. Enter the wall length and height.
      2. Enter the total area of any doors or windows.
      3. Check the brick face size and joint thickness against your brick.
      4. Set waste and price, then read the brick count.

      Worked examples

      A 20 × 6 ft wall in modular brick with ⅜ in joints and 10% waste at $0.75 each

      Wall area
      120 ft²
      Bricks per square foot
      6.86
      Bricks needed
      906
      Brick cost
      $679.50

      A 10 × 4 ft wall in 8 × 2¼ in brick with 5% waste at $0.60 each

      Bricks per square foot
      6.55
      Bricks needed
      276
      Brick cost
      $165.60

      Bricks per square foot

      A US modular brick (7⅝ × 2¼ in face) with ⅜ in joints takes 6.86 bricks per square foot, usually rounded to 7. A standard brick (8 × 2¼ in) takes 6.55. Larger queen and king size bricks take fewer, around 4.5 to 5.5.

      These counts are for a single wythe — one brick thick — as in a veneer or garden wall. A solid wall two bricks thick needs double.

      Metric bricks

      A UK brick is 215 × 65 mm on the face with 10 mm joints, which works out to 60 bricks per square meter for a single-skin wall. Switch the units to millimeters and enter those figures.

      Questions people ask

      How many bricks do I need for a 20×6 wall?

      The wall is 120 sq ft. At 6.86 modular bricks per square foot that is 823 bricks, or 906 with 10% waste.

      How many bricks are in a square foot?

      About 7 modular bricks (6.86 exactly) with ⅜ in mortar joints.

      How many bricks per square meter?

      60 for standard UK bricks (215 × 65 mm) with 10 mm joints in a single-skin wall.

      Related calculators

      Paver CalculatorPavers, gravel base and bedding sand for a patio or path.Concrete CalculatorCubic yards and premix bags for slabs, footings and post holes.Square Footage CalculatorSquare feet of a room, lot or odd shape, with cost per sq ft.Sand CalculatorSand for paver bedding, sandboxes and leveling, by the yard or bag.Tile CalculatorTiles and boxes for a floor or wall, with grout gap and waste.