Brick Calculator
Estimate bricks required for a wall based on wall size, brick size, and mortar thickness. Includes optional mortar volume and wastage.
How to calculate number of bricks
The simplest brick estimate uses wall area (length × height) divided by the brick face area. To account for mortar joints, the calculator adds the mortar thickness to brick length and height before calculating brick face area.
Brick size and mortar impact
Larger bricks reduce the number of bricks required for the same wall area. Thicker mortar joints slightly increase the effective brick size, which can reduce brick count. Real-world results vary based on patterns, openings (doors/windows), and site workmanship.
Why wastage matters in construction
Bricks can break during transport, cutting, or installation. Adding 5%–10% wastage is common for planning and helps avoid delays if extra bricks are needed.
Frequently Asked Questions
Quick answers about brick and mortar calculations.
How many bricks do I need for a wall?
Measure wall length and height, then divide wall area by the brick face area (including mortar joint). Add wastage for breakage and cuts.
What is the standard brick size?
Brick sizes vary by country. Common sizes include 190×90×90 mm in many regions and US modular bricks around 7.625×2.25×3.625 inches.
How does mortar thickness affect brick count?
Mortar joints increase the effective face area per brick (brick + joint), which can reduce the brick count slightly. Very thick joints may not be recommended structurally.
Why should I add extra bricks for wastage?
Wastage covers breakage, cuts, and handling losses. 5%–10% is a common planning range depending on the site and brick type.
How do I calculate mortar volume?
A simple estimate uses mortar volume ≈ wall volume − total brick volume. To use this, you need wall thickness and brick width.
Disclaimer
This calculator provides an estimate only. Brick counts and mortar needs vary with openings, bond patterns, wastage on site, and workmanship. For project-critical decisions, consult a qualified professional.