Calculator for Brick Wall – Loan calculator

Brick Wall Estimator

Wall Length (Meters)

Wall Height (Meters)

Brick Length (mm)

Brick Height (mm)

Mortar Joint (mm)

Wall Thickness Single Skin (Half Brick) Double Skin (One Brick)

Wastage (%)

Estimation Results

Total Bricks Required: 0

(Includes 10% wastage and mortar joints)

How to Calculate Bricks for a Wall

Planning a masonry project requires precision to ensure you have enough materials without excessive overspending. This brick wall calculator helps you determine the exact number of bricks needed for your project based on standard dimensions and construction practices.

Understanding the Formula

The calculation is based on the vertical surface area of the wall divided by the surface area of a single brick plus its mortar joint. The standard formula used is:

Wall Area: Length × Height
Effective Brick Area: (Brick Length + Mortar Joint) × (Brick Height + Mortar Joint)
Base Quantity: Wall Area / Effective Brick Area

Single Skin vs. Double Skin

A Single Skin wall (often called a stretcher bond or half-brick wall) is usually used for garden walls or the outer leaf of a cavity wall. A Double Skin wall is twice as thick, requiring double the number of bricks for the same surface area, providing greater structural integrity for load-bearing applications.

Standard Brick Sizes

In the UK, the standard "Metric" brick size is 215mm x 102.5mm x 65mm. With a standard 10mm mortar joint, you typically need approximately 60 bricks per square meter for a single skin wall. In the US, standard modular bricks are roughly 7 5/8″ x 2 1/4″ x 3 5/8″. Our calculator allows you to input custom dimensions to accommodate any local brick standard.

Accounting for Waste

Masonry work involves cutting bricks to fit corners, windows, and decorative patterns. It is industry standard to add 5% to 10% wastage to your total count to cover breakage during transit and offcuts during the laying process.

Example Calculation

If you have a wall that is 5 meters long and 2 meters high (10 square meters) using standard UK bricks (215mm x 65mm) and a 10mm mortar joint:

One brick + mortar = 0.225m x 0.075m = 0.016875 m²
10m² / 0.016875m² ≈ 592.6 bricks
Adding 10% wastage = 592.6 + 59 = 652 Bricks

function calculateBricks() { var wallL = parseFloat(document.getElementById('wallLength').value); var wallH = parseFloat(document.getElementById('wallHeight').value); var brickL = parseFloat(document.getElementById('brickLength').value); var brickH = parseFloat(document.getElementById('brickHeight').value); var mortar = parseFloat(document.getElementById('mortarJoint').value); var wallType = parseInt(document.getElementById('wallType').value); var wastage = parseFloat(document.getElementById('wastage').value); if (isNaN(wallL) || isNaN(wallH) || isNaN(brickL) || isNaN(brickH) || wallL <= 0 || wallH <= 0) { alert("Please enter valid positive numbers for wall and brick dimensions."); return; } // Convert brick dimensions from mm to meters var totalBrickLengthM = (brickL + mortar) / 1000; var totalBrickHeightM = (brickH + mortar) / 1000; // Calculate areas var wallArea = wallL * wallH; var brickAreaWithMortar = totalBrickLengthM * totalBrickHeightM; // Calculate base number var bricksNeeded = wallArea / brickAreaWithMortar; // Apply wall thickness (1 skin or 2 skins) var totalWithSkins = bricksNeeded * wallType; // Apply wastage var finalTotal = totalWithSkins * (1 + (wastage / 100)); // Round up to nearest whole brick var result = Math.ceil(finalTotal); // Display result document.getElementById('brickResult').style.display = 'block'; document.getElementById('totalBricksValue').innerText = result.toLocaleString(); document.getElementById('wastageDisplay').innerText = wastage; }