PeriCalc Pro

Professional perimeter calculator for geometric shapes. Precise tool for students, engineers and designers.

Calculation History
Perimeter
0 cm
P = 2 × π × r
Information

The perimeter of a circle is called circumference and is calculated as 2 times π times the radius.

Multiple Shapes

Calculate perimeters for 8 different geometric shapes.

Responsive Design

Interface optimized for any device.

Unit Conversion

Switch between different measurement units.

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Calculation completed!