TryBuildCalcWall / Masonry Quantity Calculator(Brick, Block, Openings, Mortar & Cost)
Calculate brick or block wall quantity with openings.
🕒 Last updated: April 17, 2026
Inputs
Please enter valid wall length
Please enter valid wall height
ℹ️Use actual wall thickness from drawings, such as 9 in brickwork or 200 mm blockwork.
ℹ️Use this for similar repeated wall panels.
Material Type & Unit Size
ℹ️Width is the solid unit depth. Wall thickness is entered separately for masonry volume.
ℹ️Typical masonry bed and vertical joint thickness is about 10 mm.
Openings
Add doors, windows, and other openings to deduct from wall area. Quantity should be the total number of that opening in the estimate.
No openings added. The calculator will estimate a solid wall.
Mortar, Wastage & Cost
ℹ️Adds extra mortar for joint filling, workmanship variation, and handling loss.
ℹ️Applies to unit quantity and mortar estimate.
Enter wall, material, and opening details to see masonry quantities
Purpose of a Wall / Masonry Quantity Calculator
A wall or masonry quantity calculator helps estimate the number of bricks or blocks required to construct a wall based on its length, height, thickness, and material type. It also accounts for deductions such as doors, windows, and other openings to provide accurate material quantities.
This calculator simplifies construction planning by estimating masonry units, mortar quantity, plaster area, and wastage. It also helps in calculating material requirements and cost, allowing better budgeting and reducing excess material usage on site.
How masonry quantity calculation works
Step 1 - Gross wall area
Step 2 - Opening deduction
Net Wall Area = Gross Wall Area - Total Opening Area
Step 3 - Wall volume
Step 4 - Brick or block quantity
Effective Unit Area = (Unit Length + Mortar Joint) x (Unit Height + Mortar Joint)
Effective Unit Volume = Effective Unit Area x Unit Width
Custom Brick or Block Units = Wall Volume / Effective Unit Volume
For standard brick sizes, the calculator uses the same empirical bricks-per-m³ method as the Brick Calculator so matching wall inputs return matching brick quantities. Custom brick sizes and blocks use the modular volume method.
Step 5 - Mortar and wastage
Final Quantity = Units x (1 + Wastage %)
Masonry quantity example
Let us estimate a brick wall with one door and one window.
- Wall length = 20 ft
- Wall height = 10 ft
- Wall thickness = 9 in
- Brick size = 190 x 90 x 90 mm
- Mortar joint = 10 mm
- Door = 3 ft x 7 ft, quantity 1
- Window = 4 ft x 4 ft, quantity 1
- Wastage = 5%
Step 1 - Wall and opening area
Opening Area = (3 x 7) + (4 x 4) = 37 sq ft = 3.44 m²
Step 2 - Net wall area
Step 3 - Unit quantity
Bricks = 3.46 x 500 = 1,731 bricks
Step 4 - Add wastage
Essential Checklist+−
Complete these critical checks before approving the work or proceeding to the next construction stage.
✓Drawings & Wall Dimensions+-
- Wall layout confirmed from approved architectural drawings
- Wall thickness confirmed — 115mm half-brick, 230mm full-brick, or as specified
- Wall height confirmed — storey height minus slab thickness and beam depth
- All door and window openings deducted from gross wall area before estimation
- Load-bearing walls identified — confirmed from structural drawing, not assumed
- Wall set-out confirmed — corners, junctions, and returns checked with square
✓Brick & Block Materials+-
- Brick quality confirmed — IS 1077 standard bricks for residential construction
- Brick count calculated using correct formula — approximately 500 bricks per m³ for 230mm wall
- Bricks soaked in water before laying — minimum 30 minutes immersion
- Brick wastage of 5–10% added before ordering — 5% for standard straight walls, 10% for complex layouts
✓Mortar Mix & Preparation+-
- Mortar mix ratio confirmed for wall type — 1:6 general masonry, 1:4 load-bearing
- Mortar volume calculated correctly — approximately 30% of total wall volume for brick walls
- Mortar consistency correct — holds shape when squeezed, not too wet or too dry
- Mortar used within 30 minutes of mixing — no retempering of stiffened mortar
- Sand for mortar is clean, sharp-grained, and free of clay, silt, and organic matter
- Mortar batched consistently throughout — gauge boxes used, not shovel counts
✓Laying & Bond Pattern+-
- Damp Proof Course (DPC) installed at plinth level before wall is built above
- Correct bond pattern laid — stretcher bond (half-brick), English bond or Flemish bond (full-brick)
- Vertical joints staggered — no continuous vertical joints (straight joints) in any three consecutive courses
- Corners built first and racked back — walls built up from corners toward centre
- Wall checked for plumb every 3–4 courses — spirit level on the wall face
- Each course checked for level — gauge rod used to confirm uniform course heights
- All bed joints and perpend joints fully filled with mortar — no voids or unfilled joints
- Wall ties or toothing provided at junction of new wall with existing wall or column
- Lintels installed over all openings before brickwork continues above
- Maximum daily build height respected — not more than 1.2m (12 courses) per day
✓Curing & Protection+-
- Completed brickwork cured by spraying water — minimum 7 days
- Fresh brickwork protected from heavy rain — top of wall covered overnight
✓Quality & Completion Checks+-
- Completed wall plumb checked — tolerance H/600 or 12mm maximum
- All door and window opening dimensions verified — clear width and height confirmed
Full QC Checklist+−
Verification checklist for brick and block masonry wall construction — covering drawing review, material estimation, mortar mix, brick quality, laying sequence, bond pattern, curing, and common defects. Use the Essential Checklist for critical checks before and during construction; expand to Full QC Checklist for complete quality control.
✓Drawings & Wall Dimensions+-
- Wall layout confirmed from approved architectural drawings
- Wall thickness confirmed — 115mm half-brick, 230mm full-brick, or as specified
- Wall height confirmed — storey height minus slab thickness and beam depth
- All door and window openings deducted from gross wall area before estimation
- Load-bearing walls identified — confirmed from structural drawing, not assumed
- Wall set-out confirmed — corners, junctions, and returns checked with square
- Drawing revision confirmed — latest revision used, especially for opening positions
✓Brick & Block Materials+-
- Brick quality confirmed — IS 1077 standard bricks for residential construction
- Brick count calculated using correct formula — approximately 500 bricks per m³ for 230mm wall
- Bricks soaked in water before laying — minimum 30 minutes immersion
- Brick wastage of 5–10% added before ordering — 5% for standard straight walls, 10% for complex layouts
- All bricks from the same production batch where possible — batch numbers confirmed
- If using fly ash bricks or AAC blocks — strength grade confirmed from test certificate
- Bricks stored on firm ground, stacked in bonds — protected from rain and soil contamination
- Bricks checked for efflorescence — white salt deposits indicate susceptibility to staining
✓Mortar Mix & Preparation+-
- Mortar mix ratio confirmed for wall type — 1:6 general masonry, 1:4 load-bearing
- Mortar volume calculated correctly — approximately 30% of total wall volume for brick walls
- Mortar consistency correct — holds shape when squeezed, not too wet or too dry
- Mortar used within 30 minutes of mixing — no retempering of stiffened mortar
- Sand for mortar is clean, sharp-grained, and free of clay, silt, and organic matter
- Mortar batched consistently throughout — gauge boxes used, not shovel counts
- If plasticiser used — manufacturer's dosage not exceeded; no excess soap or detergent
- Mortar joint thickness maintained at 10mm for brick walls, 2–3mm for AAC blocks
✓Laying & Bond Pattern+-
- Damp Proof Course (DPC) installed at plinth level before wall is built above
- Correct bond pattern laid — stretcher bond (half-brick), English bond or Flemish bond (full-brick)
- Vertical joints staggered — no continuous vertical joints (straight joints) in any three consecutive courses
- Corners built first and racked back — walls built up from corners toward centre
- Wall checked for plumb every 3–4 courses — spirit level on the wall face
- Each course checked for level — gauge rod used to confirm uniform course heights
- All bed joints and perpend joints fully filled with mortar — no voids or unfilled joints
- Wall ties or toothing provided at junction of new wall with existing wall or column
- Lintels installed over all openings before brickwork continues above
- Maximum daily build height respected — not more than 1.2m (12 courses) per day
- Joints raked out 10–15mm while mortar is green if wall is to be plastered
- Movement joints provided at maximum 6m spacing in long brick walls
✓Curing & Protection+-
- Completed brickwork cured by spraying water — minimum 7 days
- Fresh brickwork protected from heavy rain — top of wall covered overnight
- No brickwork laid in frost conditions — ambient temperature above 5°C throughout curing period
- In temperatures above 38°C — mortar mix adjusted or work timed to avoid peak heat
✓Quality & Completion Checks+-
- Completed wall plumb checked — tolerance H/600 or 12mm maximum
- All door and window opening dimensions verified — clear width and height confirmed
- Completed wall inspected for cracks — stepped cracks at corners and over openings noted
- As-built dimensions recorded — wall positions, opening dimensions, and DPC level
Common masonry unit reference
| Material | Typical Size | Typical Use |
|---|---|---|
| Brick | 190 x 90 x 90 mm | Residential and partition walls |
| AAC block | 600 x 200 x 200 mm | Lightweight blockwork |
| Concrete block | 400 x 200 x 200 mm | Block masonry and load-bearing walls |
Usage
- Estimating brick walls with door and window deductions
- Estimating AAC or concrete block walls
- Planning mortar volume and wastage before procurement
- Checking plaster area for both wall faces
- Preparing early masonry cost estimates
Limitations
This calculator assumes regular wall panels and rectangular openings. It does not account for bond pattern variation, lintel and sill detailing, jamb returns, curved walls, reinforcement, cavity walls, partial blocks, or local billing rules for small opening deductions.
Tips
- Use actual unit size from site or supplier instead of nominal size when possible.
- Enter total opening quantities across all similar walls.
- Increase wastage for short walls, more corners, and many small openings.
- Check whether your project measures plaster on one face or both faces before ordering plaster material.
- Keep masonry, mortar, plaster, and lintel quantities separate for clearer costing.
Disclaimer: This calculator provides approximate results for planning and estimation purposes only. Actual requirements may vary based on site conditions, materials, workmanship, and local building regulations. Always consult a qualified engineer, architect, or construction professional before making final decisions.