MATHEMATICS
Area & Volume Calculator
Calculate area, perimeter, surface area and volume for common two- and three-dimensional shapes.
Free to use No sign-up Runs in your browser
GEOMETRY
Enter all dimensions to calculate.
Triangle area uses Heron's formula from the three entered sides.
Uses the selected unit consistently. Calculated locally in your browser.
Choose a shape
For 2D shapes, calculate square, rectangle, circle and triangle area and perimeter or circumference. Triangle area is found from its three side lengths using Heron's formula.
Surface area and volume
For 3D shapes, calculate surface area and volume for cubes, cuboids, spheres, cylinders and cones. Select a dimension unit and enter every required positive dimension in that unit. The reported square and cubic units follow your selection.