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Geometry Calculator
Calculate area and perimeter for common geometric shapes.
Shape Settings
Results
Area:50 square units
Perimeter:30 units
Shape Information
Rectangle:Area = length × width, Perimeter = 2(length + width)
Square:Area = side², Perimeter = 4 × side
Circle:Area = πr², Perimeter (Circumference) = 2πr
Triangle:Area from the three sides (Heron's formula), Perimeter = a + b + c
Parallelogram:Area = base × height, Perimeter = 2(base + slanted side)
How to use Geometry Calculator
1. Select a shape from the dropdown menu. 2. Enter the required dimensions. 3. Area and perimeter update as you type. 4. Reset values using the reset button.
A few useful answers
What happens to my input?
This tool processes input in your browser. It does not upload files to any server.