Ellipse Perimeter Calculator
Estimate ellipse perimeter with Ramanujan’s second approximation.
Open toolSector Perimeter Calculator
Find the perimeter of a proper circular sector as two radii plus arc length. Use the same length unit throughout.
Free to useNo sign-upRuns in your browser
Enter your details
Enter the inputs, then select Calculate.
Your result
Enter your details
Result will appear here
How Sector Perimeter Calculator works
Find the perimeter of a proper circular sector as two radii plus arc length.
Use the same length unit throughout. Areas use squared units and volumes use cubed units. Angle strictly between zero and 360 degrees; a full circle has a different boundary. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
How to use Sector Perimeter Calculator
Follow the labelled inputs.
Enter circle radius
Replace the example with circle radius. The field labels specify the expected format and units.
Input and settings
Check the remaining inputs
Set central angle (degrees). Use the same length unit throughout.
Tool result
Run, review and save
Select Calculate. Review the calculated result, then copy it or download the result text.
Review the details
Examples and uses for Sector Perimeter Calculator
Check the supplied example
The starting example produces 7.14159265359. Find the perimeter of a proper circular sector as two radii plus arc length.
Use your own inputs
Read the labels for circle radius and central angle (degrees). Use the same length unit throughout.
Record a reviewed result
Copy the calculated result into your notes. Keep the formula and assumptions with it if someone else needs to reproduce the calculation.
How to read the result
Read the units and assumptions with the output.
Find the perimeter of a proper circular sector as two radii plus arc length.
Use the same length unit throughout. Areas use squared units and volumes use cubed units. Angle strictly between zero and 360 degrees; a full circle has a different boundary. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
Supported input and limits
Check the stated scope before you run it.
Use the same length unit throughout. Areas use squared units and volumes use cubed units. Angle strictly between zero and 360 degrees; a full circle has a different boundary. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
The input stays in this browser. Copy result and Download save the same displayed text.
More free tools to try
Choose another tool for your next calculation, conversion, or text task.
Regular Polygon Perimeter Calculator
Find a regular polygon perimeter as side count × side length.
Open tool
Sector Area Calculator
Sector area = angle / 360 × π × radius².
Open tool
Angular Acceleration Calculator
Average angular acceleration = change in angular velocity / time.
Open tool
Angular Acceleration Converter
Convert angular acceleration between listed units.
Open toolSector Perimeter Calculator: common questions
Answers about using Sector Perimeter Calculator and understanding its results.
What inputs and assumptions apply?
Use the same length unit throughout. Areas use squared units and volumes use cubed units. Angle strictly between zero and 360 degrees; a full circle has a different boundary. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
How can I save the result?
Copy result copies the displayed text. Download saves the same text as a TXT file. Processing runs in this browser without an account.
Calculate with your input
Check the calculated result, then copy or download it.