Brick Calculator
Calculate how many bricks and bags of mortar you need for a wall. Enter wall dimensions and brick size to get your material quantity.
Last updated 2026-08-21
What Is a Brick Calculator?
A brick calculator figures out how many bricks you need to build a brick wall and how much mortar to go with them. You enter the wall length and height plus the mortar joint thickness, and it returns a count you can order from a supplier. It saves you from buying too few bricks and stalling the job, or too many and wasting money.
How It Works
Brick face = (7.625 + joint) × (2.25 + joint) ÷ 144. Bricks = ceil(Area ÷ Brick face).
Example
A 20 ft × 8 ft wall with 3/8 in joints needs about 1,098 bricks.
How to Calculate
- Measure the wall length and height in feet. For a 20 ft long by 8 ft tall wall, the area is 160 square feet.
- Pick the mortar joint thickness. A standard 3/8 inch joint is the default and is what most brick estimates use.
- The tool divides the wall area by the face area of one brick, which is about 6.75 to 7 modular bricks per square foot at that joint.
- For 160 square feet, you get about 1,098 bricks.
- Add 5 to 10% for cuts at corners and openings. At 10%, that raises the order to roughly 1,208 bricks.
Bricks per Square Foot by Brick Size
| Brick Style | Face Size (in) | Bricks per Sq Ft |
|---|---|---|
| Modular | 7.625 x 2.25 | 6.75 to 7 |
| Standard | 8 x 2.25 | 6.4 to 6.6 |
| Queen | 7.625 x 2.75 | 5.6 to 5.8 |
| Engineer | 7.625 x 2.75 | 5.5 to 5.7 |
| Jumbo | 7.625 x 2.75 | 5.4 to 5.6 |
| King | 9.625 x 2.75 | 4.5 to 4.7 |
Sources
Frequently Asked Questions
How many bricks per square foot?
About 6.75–7 modular bricks per sq ft with standard 3/8 in joints.
Why does joint thickness matter?
Thicker joints take up more space, so fewer bricks are needed per square foot.
Should I add a waste factor?
Yes, 5–10% for cuts at corners and openings, plus chipped bricks.
Estimate the cost with the Masonry Cost Calculator. Also try: Concrete Block Calculator, Mortar Calculator or browse Masonry Calculators