Planning to build a wall and need to know how many concrete blocks are required? Our Block Quantity Calculator is a free online tool that helps you estimate the number of solid or hollow blocks required for your wall, including mortar and wastage.

🔧 How It Works

This calculator uses the wall’s length, width, and height along with block dimensions to:

• Calculate wall volume

• Estimate block volume (with and without mortar)

• Compute total number of blocks

• Add 5% wastage allowance for standard construction loss

📏 Features

• Works with both Metric (meters, millimeters) and Imperial (feet, inches) units.

• Supports Standard & custom block sizes

• Outputs are displayed in a clear and readable format.

• Includes a “Clear” button to reset values instantly.

🧮 Why Use This Calculator?

• Save time on manual calculations

• Avoid over-ordering or material shortage

• Useful for civil engineers, contractors, QS professionals, and builders

✅ Use Cases

• Residential wall construction

• Commercial blockwork estimation

• Brick-to-block quantity conversion

• Estimating materials for tenders and site works