Perimeter calculator.
Add the measured boundary segments of a space, including repeated edges.
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.
Enter every edge of your boundary. Repeated lengths are multiplied before summing. The tool does not infer missing edges or check whether the outline closes.
A worked example
Illustrative inputs only. Product properties and design dimensions are not recommendations for your project.
- Segment length
- 4 m
- Identical segments
- 2
- Segment length
- 3 m
- Identical segments
- 2
Boundary length: 14 m
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.
Method: dimensional arithmetic and user-supplied specifications. Software checks: 2026-10-04. Calculation and review policy.