Math

Use this Perimeter Calculator to find the distance around shapes. Learn formulas, units, and quick examples for rectangles, squares, and circles.

Use the Axis of Symmetry Calculator to find the symmetry line of any parabola quickly from its equation or key points.

Use a Function Operations Calculator to add, subtract, multiply, divide, and compose functions, then evaluate results at a chosen x.

Use a Composite Function Calculator to evaluate nested functions step-by-step. Input f(x) and g(x), then compute (f∘g)(x) accurately.

Use a Dilation Calculator to scale lengths, areas, and volumes using a dilation factor. Get exact results and unit-consistent outputs instantly.

Use this Area of A Sector Calculator to find sector area from radius and central angle. Includes formula, examples, and FAQs.

Use this Sphere Calculator to find a sphere’s volume and surface area from the radius or diameter. Includes clear formulas and examples.

Use a Polygon Calculator to find regular polygon perimeter, area, and apothem from side length and number of sides—fast and accurate.

Use the Equation of a Circle Calculator to convert a circle’s center and radius into standard and general forms for quick checks.

Use an Ellipse Calculator to compute area, approximate perimeter, and key dimensions from your major and minor axes.