Geometry Calculator

Calculate areas, perimeters, and volumes for common shapes. Choose a shape, enter dimensions, and get results with formulas shown.

Common parameters: radius width height base side

Calculation Result

Steps shown: –
Decimal places:

📐 Geometry Formulas Reference

○ Circle
Area = πr²
Circumference = 2πr
▭ Rectangle
Area = w × h
Perimeter = 2(w + h)
△ Triangle
Area = ½ × b × h
Perimeter = a + b + c