Math Calculator
Geometry Calculator
Calculate area, perimeter, volume, and other properties of 2D and 3D geometric shapes
Shape Calculator
Geometry Formulas
Common formulas used in geometric calculations
2D Shapes
Circle
Area = πr², Circumference = 2πr
Rectangle
Area = l×w, Perimeter = 2(l+w)
Triangle
Area = ½×base×height, Heron's formula for sides
Regular Polygon
Area = ½×perimeter×apothem
3D Shapes
Sphere
Volume = (4/3)πr³, Surface Area = 4πr²
Cylinder
Volume = πr²h, Surface Area = 2πr(r+h)
Cone
Volume = (1/3)πr²h, Surface Area = πr(r+s)
Cube
Volume = s³, Surface Area = 6s²
Tips for Accurate Calculations
• Ensure all measurements are in the same units
• For triangles, you can use either base/height or all three sides
• Regular polygons have all sides and angles equal
• Results are rounded to 4 decimal places for precision