Geometry Calculator
Choose a 2D or 3D shape, enter its dimensions, and get every standard measurement — perimeter, area, surface area, volume and diagonal.
Area
78.54
Circumference
31.42
Diameter
10
How this was worked out
- FormulasArea = πr², Circumference = 2πr
Formula
Circle: πr² • Sphere: 4⁄3πr³ • Cylinder: πr²h • Cone: ⅓πr²h
Example
Input
Circle with radius 5
Result
Area 78.54, circumference 31.42
Frequently asked questions
The total area of every face or curved surface of a 3D object.
Whatever units you entered: areas are squared and volumes are cubed.
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