How the Area Calculator Works
Choose a two-dimensional shape and enter its required dimensions. The calculator uses the standard geometric formula and reports the area in the selected square unit as well as square meters.
Formula and method
Rectangle: length × width. Triangle: (base × height) ÷ 2. Circle: π × radius². Trapezoid: ((parallel side A + parallel side B) × perpendicular height) ÷ 2.
Tips for better estimates
Use the perpendicular height for triangles and trapezoids. Make sure every length is entered in the same unit.
Important limitations
The result assumes ideal geometric shapes. Irregular boundaries, slopes, cutouts, and construction tolerances may require separate measurements or a more detailed plan.