Area calculator for rectangle, triangle, circle, trapezoid, ellipse, sector, square, and more. Calculate square footage, land area, room area, wall area, and common geometry shapes with unit conversion.
Use this area calculator to find the area of common 2D shapes such as a rectangle, triangle, circle, trapezoid, square, ellipse, and more. It is useful for geometry, schoolwork, construction, flooring, tiling, room planning, wall coverage, and other situations where you need a quick area result in the right unit.
The page also works well as a practical square footage calculator, land area calculator, or room area calculator for simple shapes. Choose the shape, enter the known dimensions, and the calculator returns the area with matching unit conversion. For more specialized cases, you can switch directly to the dedicated shape calculator from the same menu.
For everyday use, the most common cases are room area, wall or floor coverage, garden and plot measurements, paint or tile estimates, and geometry exercises. If the shape is more complex, a common method is to split it into simpler shapes, calculate each area, and add the results.