Irregular Area Calculator
Break an irregular space into simple shapes, then add or subtract sections to estimate the total area.
Results
Net area
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Added area
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Subtracted area
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Use the net area as a planning measurement. Break complex boundaries into additional simple sections when that gives a closer approximation.
How it works
The calculator computes each simple shape separately, adds positive sections and subtracts excluded sections.
net area = added shape areas − subtracted shape areasWorked example
A 20 ft × 15 ft rectangle plus a 10 ft × 6 ft triangle gives 330 ft² before any deductions.
Assumptions
- Triangles use base × perpendicular height ÷ 2; circles use the entered diameter.
Limitations
- Highly curved boundaries are approximations unless they can be represented accurately by the available shapes.