Geometric Area Calculator
Select a geometric shape, enter its required dimensions in any supported length units, and calculate its area with the applicable formula.
Rectangle: A = L × W · Circle: A = πr² · Triangle: A = ½bh · Trapezoid: A = ½(a + b)h
- A = area
- L, W = length and width
- r = radius
- b = base
- a, b = parallel sides
- h = perpendicular height
Result
Enter values and press Calculate.
Rectangle: A = L × W · Circle: A = πr² · Triangle: A = ½bh · Trapezoid: A = ½(a + b)h
For educational and general reference only. Results depend on the accuracy of the values entered and are rounded to the selected precision. Verify critical designs with a qualified engineer and applicable codes. Full disclaimer