Square Footage
Area for rectangle, triangle, trapezoid, circle.
Example
You enter
- Shape rectangle
- Length (ft) 10
- Width (ft) 12
You get
- Area (ft²) 120
Details, formula, and sources
Area = length × width (rectangle) and triangle / circle / sector for non-rectangular plans.
Classical geometry; IRC 2021 / IBC 2021 occupancy area definitions.
Free read-only access at codes.iccsafe.org.
Estimate. AHJ and licensed professional govern.
Field names used by the API: shape, length_ft, width_ft, area_ft2