Geometry Calculator
Calculate areas, volumes, and properties of various geometric shapes and solids
Geometric Shape Calculator
Select a Shape or Solid
Square
Rectangle
Triangle
Circle
Square Calculator
Calculate the area, perimeter, and diagonal of a square.
Formulas:
Area = s²
Perimeter = 4s
Diagonal = s√2
Geometry Formulas Reference
2D Shapes
Square
Area = s²
Perimeter = 4s
Diagonal = s√2
Rectangle
Area = l × w
Perimeter = 2l + 2w
Diagonal = √(l² + w²)
Circle
Area = πr²
Circumference = 2πr
Diameter = 2r
Triangle
Area = (b × h) ÷ 2
Heron's: √(s(s-a)(s-b)(s-c))
where s = (a+b+c)/2
Perimeter = a + b + c
3D Shapes
Cube
Volume = s³
Surface Area = 6s²
Space Diagonal = s√3
Rectangular Prism
Volume = l × w × h
Surface Area = 2(lw + lh + wh)
Diagonal = √(l² + w² + h²)
Sphere
Volume = (4/3)πr³
Surface Area = 4πr²
Cylinder
Volume = πr²h
Surface Area = 2πr² + 2πrh
Ratings
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