Area Calculators

You need only one circle measurement to use MiniWebtool’s Area of a Circle Calculator. Supply a radius, diameter, circumference, or known area to see the related circle dimensions, worked calculation, and diagram.

MiniWebtool’s Area of a Parallelogram Calculator offers three methods: base and height, two sides with included angle, or diagonals with intersection angle. Get step-by-step area calculations with formulas.

Calculate the size of a circular slice with MiniWebtool’s Area of A Sector Calculator. Radius and central angle, in degrees or radians, give sector area together with arc length, chord length, perimeter, and a diagram.

The two parallel bases and perpendicular height determine a trapezoid’s area. MiniWebtool’s Area of a Trapezoid Calculator shows the substitution and result, with your chosen units and a diagram to identify the measurements.

Enter the two semi-axis lengths in MiniWebtool’s Area of An Ellipse Calculator to find the enclosed area. Related results include eccentricity and an estimated perimeter, with a visualization of the ellipse.

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

Calculate exterior area for common solids with MiniWebtool’s Surface Area Calculator. Choose a sphere, cylinder, cone, rectangular prism, triangular prism, square pyramid, or tetrahedron and follow the dimensional formulas with diagrams.

MiniWebtool’s Surface Area of a Cone Calculator separates the curved surface from the base. Enter a supported pair of dimensions to see lateral, base, and total area with the formulas and diagram.

Calculate a cube's total surface area with MiniWebtool’s Surface Area of a Cube Calculator by entering an edge, space diagonal, face diagonal, or volume.

MiniWebtool’s Surface Area of a Cylinder Calculator combines the curved wall and circular ends from radius and height. Review lateral, base, and total area with a three-dimensional illustration and formula breakdown.

MiniWebtool’s Surface Area of a Rectangular Prism Calculator uses length, width, and height to total the box’s six faces. A face-by-face breakdown and three-dimensional view connect the dimensions with the area formula.

A sphere’s size determines its entire surface. MiniWebtool’s Surface Area of Sphere Calculator accepts radius or diameter and shows the 4πr² calculation with unit conversions.