Area and perimeter calculators for various shapes

When you know the square footage/square metres of your area you can use the following calculators to calculate materials needed based on the area in square feet or square metres.

Calculators can be used with Imperial or Metric measurements.

Calculate the area and perimeter of various shapes.

• Circle
• Circle Segment
• Donut
• Ellipse
• Equilateral Triangle
• Isosceles Triangle
• Multiple Shapes
• Octagon
• Pentagon
• Quatrefoil
• Rectangle or Square
• Right Angled Triangle
• Trapezoid

Changing the shape of an Area

• Circle to an Oval
• Circle to a Rectangle
• Circle to a Right Angled Triangle
• Circle to a Square

Calculate the perimeter of Acreage or Building Lot

• Perimeter of an Acreage or Building Lot
• Lot and Building Envelope Square Footage
• Square Footage Building Envelope Odd Shaped Lot