Brick Quantity Calculator
Estimate the number of bricks needed for a wall, including a mortar and wastage allowance.
About this calculator
The Brick Quantity Calculator on NumberCals is a free, mobile-friendly tool for anyone needing to estimate the number of bricks needed for a wall, including a mortar and wastage allowance. Enter your values in the form below and the result is computed instantly — no sign-up, no installation, no waiting.
Formula used
Wall area / Brick face area × wastage allowance
What you'll need
- Wall Length (m) (e.g. 10)
- Wall Height (m) (e.g. 2.5)
- Brick Length (mm) (e.g. 230)
- Brick Height (mm) (e.g. 76)
- Mortar Joint Thickness (mm) (e.g. 10)
- Wastage (%, default 5) (e.g. 5)
What you'll get
- Bricks Needed (with wastage)
- Wall Area (m²)
Frequently Asked Questions
Does this account for openings? +
No — calculate wall area minus window/door openings first, then plug that in by entering equivalent dimensions, OR estimate the full wall and subtract bricks for openings manually.
Why include mortar in brick dimensions? +
Because each brick effectively occupies (brick_length + mortar) × (brick_height + mortar) of wall space. The calculator handles this for you.