The calculation, explained.
Total area = first rectangle length × width + second rectangle length × width. Enter zero for an unused zone. Overlapping zones must not be counted twice.
Review the example assumptions and results
- Length
- 12 ft
- Width
- 10 ft
- Second zone length
- 6 ft
- Second zone width
- 5 ft
- Area
- 150 ft²
- Metric area
- 13.9355 m²
How this tool works
Adjust the labeled inputs to see a new calculation. Units and assumptions are shown beside each field. Printed and copied results use the same calculation.
This is a planning estimate, not a structural design, permit document or binding quote. Check product specifications and actual site measurements.
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