MEASURE ONCE. PLAN YOUR PURCHASE.

Masonry Course and Closure calculator.

Count full units and geometric closure widths course by course from a supplied bond offset.

MASONRY

Your inputs

Use measurements from your plan and properties from your chosen product. Any prefilled values are illustrative.

YOUR ESTIMATE

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A clear estimate starts here.

Enter your dimensions and product details to see the quantity and purchase breakdown.

CONTINUE YOUR PLAN

Find the next material.

Keep the quantity, then use another tool for the remaining parts of your purchase.

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Formula and assumptions

BEHIND THE NUMBERS

How this calculation works.

Starter lengths are specified, not selected. Closure sizes are geometric measurements and are not recommendations for minimum masonry cuts or structural bond.

Available straight span = course length − starter; full units = floor((span+joint)/(unit+joint))Calculated with normalised units

A worked example

Illustrative inputs only. Product properties and design dimensions are not recommendations for your project.

Course length: 2 m
Unit length: 0.2 m
Joint thickness: 10 mm
Specified starter length: 0 m
Identical courses: 1

Unit pieces including starters and closures: 10 pieces

Before you purchase

Use dimensions from your plan and properties from your chosen product. Any design spacing, section or fixing pattern must already be specified.

Starter lengths are specified, not selected. Closure sizes are geometric measurements and are not recommendations for minimum masonry cuts or structural bond.

Method: dimensional arithmetic and user-supplied specifications. Software checks: 2026-10-04. Calculation and review policy.