Overlapping Rectangle Union calculator.
Measure the combined covered area of axis-aligned rectangular zones without counting overlaps 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.
Measure the combined covered area of axis-aligned rectangular zones without counting overlaps twice. Only axis-aligned measured rectangles; no inference of property boundaries.
A worked example
Illustrative inputs only. Product properties and design dimensions are not recommendations for your project.
- Left coordinate
- 0 m
- Bottom coordinate
- 0 m
- Rectangle width
- 2 m
- Rectangle height
- 2 m
- Left coordinate
- 1 m
- Bottom coordinate
- 1 m
- Rectangle width
- 2 m
- Rectangle height
- 2 m
Combined covered area: 7 m²
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.
Only axis-aligned measured rectangles; no inference of property boundaries.
Method: dimensional arithmetic and user-supplied specifications. Software checks: 2026-10-04. Calculation and review policy.