Include the mortar joint in the repeating module
A 190×57 mm brick with 10 mm joints becomes a 200×67 mm calculation module. This does not reproduce the exact last-row or last-column joint layout.
087 · REAL ESTATE & BUILD
Brick & Block Quantity Calculator
Enter wall dimensions, brick or block size, mortar joint, and waste rate to estimate quantity and recommended purchase count.
LOCALCALCULATE IN YOUR BROWSER
LOCALInputs are calculated only in this browser and are not sent to or stored on a server.
WALLWall size
MATERIALMaterial Size
JOINTMortar Joint
WASTE & COSTOptional
Advanced settings · Display decimals
2
RESULT · Calculation result
Wall Area12m²
Module Size200 × 67mm
Raw Quantity895.52pcs
Quantity incl. waste940.3pcs
Recommended Purchase Quantity941pcs
Estimated Cost470,500input currency
Formula
Wall Area = length × height · Module = (material width + joint) × (material height + joint) · Quantity = ceil((Wall Area ÷ Module Area) × (1 + Waste ÷ 100))This is a simple area-and-joint reference. It does not determine actual masonry layout, cuts, openings, corners, structural safety, or legal requirements.
HOW TO USE
How to use
- 01
Enter wall length and height in meters.
- 02
Enter brick or block width and height in millimeters.
- 03
Enter the default mortar joint. Use advanced input if horizontal and vertical joints differ.
- 04
Enter a waste rate for your reference. Add unit price to estimate purchase cost.
- 05
Review wall area, module size, raw quantity, waste-adjusted quantity, and the rounded recommended purchase count.
- 06
Before construction, separately verify openings, corners, cuts, layout, structural safety, and legal requirements.
MASONRY QUANTITY
Brick and block quantity guide
5 m × 2.4 m wall example
A 12 m² wall divided by a 200×67 mm module gives about 895.52 pieces before waste. With 5% waste it becomes about 940.30, rounded up to 941 for purchase.
Waste rate and rounding
Breakage, cutting, and site allowance are represented by one waste-rate input. The waste-adjusted decimal quantity is rounded up to a whole purchase unit.
Estimate cost from unit price
For example, 941 pieces at 500 per piece gives an estimated cost of 470,500 in the entered currency. Delivery, mortar, and labor are not included.
Small joint changes accumulate
A 1 mm change is small for one brick, but the module repeats across the wall. If the actual joint specification is known, enter it and compare the resulting count rather than relying on a default.
Check package units and breakage allowance
The calculator returns pieces. Real orders may use pallet or bundle units, so round again to the supplier package and verify that cutting and breakage allowance is represented in the waste rate.
IMPORTANT NOTES
Important notes
- The calculator uses a simple reference model: wall area divided by the repeating material-plus-joint module area.
- It does not optimize the actual last row or column, cuts, or on-site laying pattern.
- Doors, windows, corners, and L/T-shaped walls are outside the first-version scope.
- Waste rate is a user-entered reference and does not guarantee real-site waste.
- Structural safety, reinforcement, mortar quantity, construction method, and legal requirements are not determined.
- Estimated cost uses the entered unit price and currency as-is.
FAQ
Frequently asked questions
01How is brick quantity calculated?+
Wall area is divided by the repeating brick-plus-joint module area, then the waste rate is applied and the result is rounded up.
02What is the module size for a 190×57 mm brick with a 10 mm joint?+
With 10 mm joints in both directions, the repeating module is 200×67 mm.
03How many bricks for a 5 m × 2.4 m wall?+
Using 190×57 mm material, a 10 mm joint, and 5% waste gives a recommended purchase count of about 941.
04Can the joint be zero?+
Yes. Zero is treated as a no-joint reference.