Brick and Block Calculator for Walls
Estimate bricks or blocks for a rectangular wall from unit dimensions, mortar joints and waste. Calculate openings separately.
Formula
Planning estimate. Check product specifications and local requirements before purchasing.
Worked example: Brick and Block Calculator
Measurements in this example
| Length | 8 m |
|---|---|
| Height | 2.7 m |
| Brick length | 25 cm |
| Brick height | 6.5 cm |
| Joint thickness | 10 mm |
| Waste allowance | 5 % |
Calculated quantities
| Area | 21.6 m² |
|---|---|
| Bricks or blocks | 1164 |
What to check
This calculation uses: Length, Height, Brick length, Brick height, Joint thickness, Waste allowance. It returns: Area, Bricks or blocks.
The estimate uses the visible brick face and the mortar joint in both directions. It represents one layer of rectangular masonry. Calculate walls of another thickness or bond separately. The tool does not subtract doors and windows automatically and does not calculate mortar bags. Check actual unit size and the masonry layout before ordering.
Use the units beside each field. The values in the worked example are starting inputs; replace them with your measurements and the specifications of your material.
Compare alternatives
Open a tool, enter your measured dimensions, then save an estimate. Keep another version if you want to compare products or allowances.