Area of a Circle Calculator - Calculate the area of a circle from radius, diameter, or circumference. Get instant results with step-by-step calculations, interactive diagrams, and comprehensive circle metrics.

Area of a Parallelogram Calculator - Calculate the area of a parallelogram using three methods: base and height, two sides with included angle, or diagonals with intersection angle. Get step-by-step calculations with formulas.

Area of A Sector Calculator - Calculate the area of a sector of a circle with interactive SVG diagram, step-by-step calculation, arc length, and comprehensive sector formulas using radius and central angle.

Area of a Trapezoid Calculator - Calculate the area of a trapezoid instantly with our interactive calculator. Features a dynamic visual diagram, step-by-step formula breakdown, and support for various unit systems.

Area of An Ellipse Calculator - Calculate ellipse area instantly with our free tool. Get area, perimeter (Ramanujan formula), eccentricity, and interactive visualization. Perfect for geometry, engineering, and design calculations.

Area of Equilateral Triangle Calculator - Calculate the area of an equilateral triangle from side length, height, or perimeter. Includes step-by-step formulas, interactive triangle diagram, and complete property calculations.

Surface Area Calculator - Calculate the surface area of 8 geometric shapes including sphere, cylinder, cone, cuboid, rectangular prism, triangular prism, square pyramid, and tetrahedron with detailed step-by-step solutions and interactive diagrams.

Surface Area of a Cone Calculator - Calculate the surface area of a cone instantly with our free calculator. Get lateral surface area, base area, and total surface area with step-by-step formulas and interactive visual diagram.

Surface Area of a Cube Calculator - Calculate the total surface area of a cube with step-by-step solutions. Find surface area from edge length, space diagonal, face diagonal, or volume with interactive 3D visualization and comprehensive measurements.

Surface Area of a Cylinder Calculator - Calculate the total, lateral, and base surface area of a cylinder with high precision, interactive 3D visualization, step-by-step formula breakdown, and area distribution analysis.

Surface Area of a Rectangular Prism Calculator - Calculate the surface area of a rectangular prism (cuboid/box) with interactive 3D visualization, step-by-step formulas, face-by-face breakdown, and high-precision results.

Surface Area of Sphere Calculator - Calculate the surface area of a sphere from radius or diameter with step-by-step formula breakdown, interactive visualization, and unit conversions. Perfect for geometry, engineering, and science.