🧱 Construction Tool
Brick Calculator
Estimate how many bricks you need for your wall, including mortar, wastage and total material cost — instantly.
Wall Details
Enter the dimensions of the wall you’re building
Single Leaf
One brick thick
Double Leaf
Two bricks thick
m²
Brick Dimensions
Standard Indian brick: 190 × 90 × 90 mm
mm
mm
mm
Quick Presets
Wastage & Cost
Account for breakage and estimate total spend
₹ / brick
Results
Updates automatically as you type
Bricks Needed
Net quantity (no wastage)
—
Wastage Bricks
Extra for breakage
—
Total to Order
Including wastage
—
Estimated Cost
Total × price per brick
—
Visual Preview
Formula Used
Calculation
Bricks = (L × H) ÷ ((l + t) × (h + t))
How to use this calculator
1
Choose wall type — single leaf (one brick thick) or double leaf (two bricks thick)
2
Enter wall dimensions — length and height in metres, feet or cm
3
Adjust brick size — use a preset or enter custom dimensions. Mortar joint is typically 10 mm
4
Set wastage — 10% is standard; use 15–20% for complex shapes with lots of cuts
5
Add price per brick (optional) to instantly see total material cost
Brick Calculation Formula for Wall
The standard brickwork formula divides wall area by the face area of a single brick including its mortar joint. Here’s how to apply it step by step.
Brick Calculation Formula
Bricks = (L × H) ÷ ((l + t) × (h + t))
L = wall length • H = wall height • l = brick length • h = brick height • t = mortar joint. Multiply by 2 for double-leaf (9-inch) walls.
1
Measure wall area
Multiply wall length × height. Subtract area of any doors or windows.
2
Choose brick size
Standard Indian brick: 190 × 90 mm face. UK: 215 × 65 mm. US: 203 × 95 mm.
3
Add mortar joint
Standard mortar joint is 10 mm. Add t to both brick length and height before dividing.
4
Add wastage
10% for straight walls. 15% with openings. Up to 20% for complex cuts.
📐 Worked Example — 5 m × 3 m wall, Standard Indian Brick (190 × 90 × 90 mm), 10 mm mortar, single leaf
Wall area = 5.0 m × 3.0 m = 15.00 m²
Brick face (with mortar) = (190+10) mm × (90+10) mm = 200 × 100 = 0.0200 m²
Net bricks needed = 15.00 ÷ 0.0200 = 750 bricks
Wastage (10%) = 750 × 0.10 = 75 bricks
Total to order = 750 + 75 = 825 bricks
How Many Bricks Per Square Metre by Wall Thickness?
Reference values for standard Indian bricks (190 × 90 × 90 mm) with a 10 mm mortar joint. All figures are per m² of wall face area.
| Wall Type | Thickness | Bond | Bricks / m² | Bricks / sq ft | Order (incl. 10% wastage) | Common Use |
|---|---|---|---|---|---|---|
| 4″ / 4.5″ wall Half-brick | ~115 mm | Stretcher bond | 50 | 4.6 | 55 / m² | Partition, boundary |
| 6″ wall | ~150 mm | Varies | ~60–65 | ~5.6–6.0 | ~66–72 / m² | Lightweight partition |
| 9″ wall Full-brick | ~230 mm | English / Flemish | 100 | 9.3 | 110 / m² | Load-bearing, external |
| 10″ wall | ~250 mm | English bond | ~110 | ~10.2 | ~120 / m² | Thick structural wall |
| 13.5″ / 14″ wall 1.5 brick | ~345–355 mm | English bond | 150 | 13.9 | 165 / m² | Retaining, basement |
4.5″ Wall
Half-brick • ~115 mm thick
Bricks per m²50
Bricks per sq ft4.6
Order with 10% wastage55 / m²
5m × 3m wall total825 bricks
9″ Wall
Full-brick • ~230 mm thick
Bricks per m²100
Bricks per sq ft9.3
Order with 10% wastage110 / m²
5m × 3m wall total1,650 bricks
13.5″ / 14″ Wall
1.5 brick • ~345 mm thick
Bricks per m²150
Bricks per sq ft13.9
Order with 10% wastage165 / m²
5m × 3m wall total2,475 bricks
Standard Brick Sizes & Mortar Joint Thickness
Brick dimensions vary by country. The standard mortar joint thickness for brickwork is 10 mm in India, the UK, and most countries following IS or BS codes.
| Country / Standard | Brick Size (L × H × W) | Mortar Joint | Bricks / m² (4.5″ wall) | Bricks / m² (9″ wall) |
|---|---|---|---|---|
| 🇮🇳 India — Modular (IS 1077) | 190 × 90 × 90 mm | 10 mm | 50 | 100 |
| 🇮🇳 India — Traditional | 230 × 110 × 75 mm | 12 mm | ~45 | ~90 |
| 🇵🇰 Pakistan Standard | 225 × 112 × 75 mm | 12 mm | ~42 | ~84 |
| 🇬🇧 UK Standard (BS 3921) | 215 × 65 × 102 mm | 10 mm | 59 | 118 |
| 🇺🇸 USA Standard (ASTM) | 203 × 95 × 92 mm | 10 mm | 45 | 90 |
Mortar Joint Thickness — Standard Values
Bed joint (horizontal)10 mm
Perpend joint (vertical)10 mm
Minimum (thin-joint)3 mm
Maximum (structural)15 mm
IS Code referenceIS 1905
Mortar Mix Ratios (Cement : Sand by volume)
Internal / partition walls1 : 6
External / load-bearing1 : 4
High-strength structural1 : 3
Mortar volume (approx)~30% of wall volume
Bags of cement / 1,000 bricks~2.5 bags (1:6 mix)
Frequently Asked Questions About Brick Calculation
Common questions about calculating brick quantities, wall thicknesses, mortar joints, and brickwork material estimates.
What is the formula to calculate the number of bricks in a wall?
The standard brick calculation formula is:
For a 5 m × 3 m wall using Indian standard bricks (190 × 90 mm) with 10 mm mortar:
Add 10% wastage → order 825 bricks. For a 9-inch double-leaf wall, multiply by 2 → 1,650 bricks.
Bricks = (Wall Length × Wall Height) ÷ ((Brick Length + Mortar) × (Brick Height + Mortar))For a 5 m × 3 m wall using Indian standard bricks (190 × 90 mm) with 10 mm mortar:
Bricks = (5 × 3) ÷ (0.200 × 0.100) = 750 bricksAdd 10% wastage → order 825 bricks. For a 9-inch double-leaf wall, multiply by 2 → 1,650 bricks.
How many bricks per square metre for a 9-inch wall?
A 9-inch (230 mm) double-leaf wall requires 100 bricks per m² using standard Indian bricks (190 × 90 × 90 mm) with a 10 mm mortar joint. In sq ft: approximately 9.3 bricks per sq ft.
Including 10% wastage, order 110 bricks per m². For a 5 m × 3 m wall (15 m²): order 1,650 bricks total.
Including 10% wastage, order 110 bricks per m². For a 5 m × 3 m wall (15 m²): order 1,650 bricks total.
How many bricks are required for a 4.5-inch wall per square metre?
A 4.5-inch (half-brick, single-leaf) wall requires 50 bricks per m² — approximately 4.6 bricks per sq ft.
Including 10% wastage, order 55 bricks per m². A 5 m × 3 m wall = 15 m² → order 825 bricks.
Including 10% wastage, order 55 bricks per m². A 5 m × 3 m wall = 15 m² → order 825 bricks.
What is the standard mortar joint thickness for brickwork?
The standard mortar joint thickness is 10 mm (approx 3/8 inch) for both horizontal bed joints and vertical perpend joints per IS 1905.
Joints below 3 mm are used for thin-joint / AAC block work. Joints above 15 mm reduce structural strength and should be avoided.
Joints below 3 mm are used for thin-joint / AAC block work. Joints above 15 mm reduce structural strength and should be avoided.
How do you calculate bricks for a boundary wall?
Step-by-step boundary wall calculation:
Example: 40 m perimeter × 2.5 m high = 100 m². 9″ wall: 100 × 100 + 10% = 11,000 bricks.
- Measure total perimeter length in metres
- Multiply by wall height to get total area (m²)
- For a 4.5″ wall: area × 50 | For a 9″ wall: area × 100
- Add 10–15% for wastage and corner cuts
Example: 40 m perimeter × 2.5 m high = 100 m². 9″ wall: 100 × 100 + 10% = 11,000 bricks.
How many bricks are needed to build a house?
For a 1,000 sq ft single-storey house in India:
- 4.5-inch walls: approximately 8,000–10,000 bricks
- 9-inch walls: approximately 14,000–18,000 bricks
What wastage factor should I use for brickwork?
- 5–10% — Simple straight wall, no openings
- 10–15% — Wall with doors, windows, standard corners
- 15–20% — Complex shapes, arches, curved walls
- 20%+ — Intricate decorative or diagonal brickwork
ईंट निकालने का फार्मूला क्या है? (Brick calculation formula in Hindi)
ईंट निकालने का फार्मूला:
उदाहरण — 5 m × 3 m की 4.5 इंच दीवार:
10% बर्बादी जोड़ें → कुल 825 ईंटें मंगवाएं।
14 इंच दीवार: प्रति m² लगभग 150 ईंटें • 9 इंच दीवार: प्रति m² 100 ईंटें
ईंटें = (दीवार की लंबाई × ऊंचाई) ÷ ((ईंट की लंबाई + जोड़) × (ईंट की ऊंचाई + जोड़))उदाहरण — 5 m × 3 m की 4.5 इंच दीवार:
ईंटें = (5 × 3) ÷ (0.200 × 0.100) = 750 ईंटें10% बर्बादी जोड़ें → कुल 825 ईंटें मंगवाएं।
14 इंच दीवार: प्रति m² लगभग 150 ईंटें • 9 इंच दीवार: प्रति m² 100 ईंटें