↦

An Annulus is a ring shaped object (the area between two concentric circles)

Enter the dimensions of the outer and inner circles to calculate the annulus.

There is an option to create a PDF document from the details entered

*Diameter is the Radius x 2*

*Radius is the Diameter x 0.5*

*Circumference is PI x Diameter*

*Area is 2 x PI x Radius*

*PI is 3.141592654 (to 9 decimal places)*

People who used the 'Annulus Calculator' also viewed the following math calculators:

- Number Format Converter
- Degrees to Radians Converter
- Pressure Converter
- Speed Distance Time Calculator
- Binary to Decimal Converter
- Distance Converter
- Height Converter
- Imperial Converter
- Length Converter
- Distance Converter

- Mass, Density & Volume Calculator
- Volume of a Cone Calculator
- Volume of a Cube Calculator
- Rectangular Cuboid Volume Calculator
- Volume of an Ellipsoid Calculator
- Volume of an Irregular Prism Calculator
- Volume of a Pyramid Calculator
- Volume of a Rectanglular Prism Calculator
- Volume of a Sphere Calculator
- Volume of a Triangle Pyramid Calculator

- Rhombus Calculator
- Stadium Geometric Shape Calculator
- Annulus Calculator
- Advanced Polygon Calculator
- Regular Polygon Calculator
- Rectangle Calculator
- Pythagoras Triangle Calculator
- Arc Of Circle Calculator
- Circle Calculator
- Square Calculator

- Rectangular Prism Calculator
- Square Pyramid Calculator
- Frustum Calculator
- Tube Weight Calculator
- Cone Calculator
- Cylinder Calculator
- Prism Calculator
- Sphere Calculator
- Cube Calculator
- Rectangular Cuboid Calculator