Brick Calculator
Fill in the values and the answer updates as you type.
How the Brick Calculator works
Each brick covers (length + joint) × (height + joint). Divide the wall area by that to get the count, then add the waste allowance. Subtract door and window openings from the wall area first.
Inputs and results
The Brick Calculator takes 6 inputs and gives 3 results.
What you enter
- Wall length (m) — starts at 6.
- Wall height (m) — starts at 2.5.
- Brick length (cm) — starts at 21.
- Brick height (cm) — starts at 7.
- Mortar joint thickness (cm) — starts at 1.
- Waste allowance (%) — starts at 5.
What you get
- Bricks needed
- Wall area (m²)
- Bricks per m² (no waste)
Example: Brick Calculator with the starting values
With wall length 6 m, wall height 2.5 m, brick length 21 cm, brick height 7 cm and mortar joint thickness 1 cm, the calculator returns:
| Bricks needed | 895 |
|---|---|
| Wall area (m²) | 15 |
| Bricks per m² (no waste) | 56.8 |
Change any value above and the results update straight away.
Brick Calculator FAQ
How do I use the Brick Calculator?
Enter wall length, wall height, brick length and brick height in the fields, then read bricks needed, wall area (m²) and bricks per m² (no waste) in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Brick Calculator calculate?
Number of bricks for a wall, including mortar joints and waste. It returns bricks needed, wall area (m²) and bricks per m² (no waste) from the 6 values you provide.
What values does the Brick Calculator start with?
It opens with wall length 6 m, wall height 2.5 m, brick length 21 cm and brick height 7 cm so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Brick Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Brick Calculator for important decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm important decisions with a qualified professional. See the Disclaimer for more.