Circle Sector – Geometric Properties

StructX Calculator

Geometric Property Calculator

The above circle sector property calculator is based on the provided equations and does not account for all mathematical limitations. The calculator has been provided with educational purposes in mind and should be used accordingly. Unit conversion

Geometric Properties of a Circle Sector

Need an spreadsheet for designing the above shape, click here!

Notation and Units

Metric and Imperial Units

The above formulas may be used with both imperial and metric units. As with all calculations care must be taken to keep consistent units throughout. Examples of units which are typically adopted are outlined below:


  • A = Geometric Area, in2 or mm2
  • C = Distance to Centroid, in or mm
  • I = Second moment of area, in4 or mm4
  • Ji = Polar Moment of Inertia, in4 or mm4
  • K = Radius of Gyration, in or mm
  • P = Perimeter of shape, in or mm
  • Z = Elastic Section Modulus, in3 or mm3

Online Circle Sector Property Calculator

Using the structural engineering calculator located at the top of the page (simply click on the the “show/hide calculator” button) the following properties can be calculated:

  • Area of a Circle Sector
  • Perimeter of a Circle Sector
  • Centroid of a Circle Sector
  • Second Moment of Area (or moment of inertia) of a Circle Sector
  • Polar Moment of Inertia of a Circle Sector
  • Radius of Gyration of a Circle Sector
  • Elastic Section Modulus of a Circle Sector
  • Plastic Section Modulus of a Circle Sector

You are watching: Geometric Properties. Info created by GBee English Center selection and synthesis along with other related topics.