Thickened Edge Concrete calculator.
Measure a supplied perimeter thickening without counting corner volumes twice.
Your inputs
Use measurements from your plan and properties from your chosen product. Any prefilled values are illustrative.
A clear estimate starts here.
Enter your dimensions and product details to see the quantity and purchase breakdown.
Formula and assumptions
How this calculation works.
The main slab covers the whole footprint. Only thickness beyond that slab is added over the perimeter band; all dimensions must come from an existing plan.
A worked example
Illustrative inputs only. Product properties and design dimensions are not recommendations for your project.
- Outside length
- 4 m
- Outside width
- 3 m
- Main slab thickness
- 100 mm
- Specified edge band width
- 0.2 m
- Specified total edge thickness
- 300 mm
- Purchase allowance
- 0 %
Concrete order volume: 1.73 m³
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.
The main slab covers the whole footprint. Only thickness beyond that slab is added over the perimeter band; all dimensions must come from an existing plan.
Dimensions, quantities, prices, timing and product properties are supplied by you. This tool does not select construction specifications or assess structural, electrical or hydraulic suitability.
Method: dimensional arithmetic and user-supplied specifications. Software checks: 2026-10-04. Calculation and review policy.