Brick Calculator

The brick calculator is a construction tool that estimates the number of bricks required for a wall based on wall dimensions, brick size, and mortar joint thickness. It applies a wastage factor and calculates the total material cost — giving you a complete brick estimate in one place.

What Is a Brick Calculator?

A brick calculator is a tool used to accurately estimate the number of bricks required for construction projects, minimizing waste and material costs. It calculates brick needs based on wall dimensions, wall type (single or double), brick size, and mortar joint thickness — and includes a wastage allowance to account for broken or cut bricks.

The Brick Calculation Formulas

Volume Method

Total Wall Volume (L × H × W) ÷ Volume of One Brick (including mortar) = Total Bricks

2D Wall Area Method

Wall Area (L × H) ÷ Face Area of One Brick (including mortar) = Total Bricks

The face area of one brick including mortar = (Brick Length + Mortar) × (Brick Height + Mortar).

At default values (200 mm brick length, 100 mm brick height, 10 mm mortar joint): Face area = (200 + 10) × (100 + 10) = 210 × 110 = 23,100 mm² = 0.0231 m² Bricks per m² = 1 ÷ 0.0231 = approximately 43 bricks per m²

How the Brick Calculator Works

Wall Details Inputs

• Type of wall — default: Single (also Double available)

• Wall length (L) — length of the wall (unit: meters)

• Wall height (H) — height of the wall (unit: meters)

• Wall area — auto-calculated from L × H (m²)

Brick Details Inputs

• Brick length (l) — default: 200 mm

• Brick height (h) — default: 100 mm

• Brick width (w) — default: 100 mm

• Mortar joint thickness (t) — default: 10 mm

Bricks Required Outputs

• Bricks needed — auto-calculated base count

• Brick wastage — default: 5%

• Total bricks needed — bricks needed + 5% wastage

Cost of Materials

• Price per brick — enter your local brick price (INR)

• Cost of bricks — auto-calculated total cost (INR)

• Optional: tick the checkbox to see mortar materials breakdown

How to Calculate Bricks — Step by Step

Example 1: Single Garden Wall

Wall: 5 m long, 1.5 m high. Default brick size (200 × 100 × 100 mm). Mortar: 10 mm.

Step 1: Wall area = 5 × 1.5 = 7.5 m². Step 2: Face area per brick with mortar = 210 × 110 = 23,100 mm² = 0.0231 m². Step 3: Bricks needed = 7.5 ÷ 0.0231 = 324.7 ≈ 325 bricks. Step 4: With 5% wastage = 325 × 1.05 = 342 total bricks.

Enter: Wall length = 5, Wall height = 1.5, all brick defaults. Result: ~342 total bricks.

Example 2: Larger Wall with Cost

Wall: 10 m long, 3 m high. Price = INR 8 per brick.

Step 1: Wall area = 10 × 3 = 30 m². Step 2: Bricks needed = 30 ÷ 0.0231 = 1,298.7 ≈ 1,299 bricks. Step 3: With 5% wastage = 1,299 × 1.05 = 1,364 total bricks. Step 4: Total cost = 1,364 × 8 = INR 10,912.

Brick Count Reference Table

Note: Values use default brick size (200×100 mm) with 10 mm mortar joint — approximately 43 bricks per m². Actual counts vary with brick size and mortar thickness.

More Construction Calculators

These related tools can help with your broader project planning:

• Rebar Calculator — estimate rebar pieces and cost for concrete slabs

• Stair Calculator — calculate steps, rise, run, and stringer length

• Vinyl Siding Calculator — estimate siding panels and total cost

• Cubic Yard Calculator — calculate volume in cubic yards and material cost

• Rafter Length Calculator — find exact roof rafter length from rise and run

• Lumber Calculator — estimate wood volume, length, and total cost

Frequently Asked Questions

How many bricks for 1200 sq ft?

1,200 sq ft is approximately 111.5 m². At 43 bricks per m² with 5% wastage, you need roughly 5,023 bricks. Enter your exact wall dimensions into the brick calculator for a precise count based on your brick size and mortar thickness.

How many bricks for 300 sq ft?

300 sq ft is approximately 27.9 m². At 43 bricks per m² with 5% wastage, that comes to around 1,256 bricks. Use the brick wall calculator with your specific dimensions for an accurate total.

How much to brick a 2000 sq ft house?

2,000 sq ft of wall area is approximately 185.8 m², requiring roughly 8,374 bricks at 43 per m² with 5% wastage. Enter your price per brick in the Cost of materials section to get the total estimated cost instantly.