Brick Calculator
Work out how many bricks you need for a wall, a planter or a veneer. Enter the wall size, subtract any openings and pick the brick size to get the total count with extra for breakage.
- Wall area
- 160 sq ft
- Bricks per sq ft
- 6.75
- Without extra
- 1,080 bricks
How this calculator works
Each brick plus its mortar joint takes up a fixed area of wall. With a standard 3/8 inch joint, a modular brick occupies 8 × 2⅔ inches, so it takes 6.75 bricks to cover one square foot.
The wall area (length × height, minus doors and windows) is multiplied by the bricks per square foot for the size you choose.
An extra percentage covers broken bricks and cuts. The result assumes a single-wythe wall (one brick thick); double it for a double-wythe wall.
Example: a 20 × 8 ft wall in modular brick
- Wall area: 20 × 8 = 160 sq ft.
- Bricks: 160 × 6.75 = 1,080 bricks.
- Add 5% for breakage: 1,134 bricks.
Quick reference
| Brick size | Actual size | Bricks per sq ft |
|---|---|---|
| Modular | 7⅝ × 2¼ in | 6.75 |
| Queen | 7⅝ × 2¾ in | 5.76 |
| King | 9⅝ × 2⅝ in | 4.8 |
| Utility | 11⅝ × 3⅝ in | 3 |
Tips before you buy
- Order all your bricks at once — color can vary between production runs.
- Brick sizes vary by manufacturer. If your brick is a different size, check its coverage per square foot on the spec sheet.
- Structural brick walls need footings and may need permits; check local building codes.
Frequently asked questions
How many bricks are in a square foot?
About 6.75 standard modular bricks per square foot with a 3/8 inch mortar joint. Larger bricks such as king or utility need fewer.
How many bricks do I need for a 10 × 10 ft wall?
A 100 sq ft wall in modular brick needs 675 bricks, or about 709 with 5% extra for breakage.
How much extra brick should I buy?
Add 5% for straightforward walls and up to 10% for walls with many corners, openings or decorative patterns.
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Last updated October 25, 2026