Length Converter
Multiply the input by the source unit factor and divide by the destination factor.
Open toolChord Length Calculator
Find circle chord length as 2r sin(θ/2). 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
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Result will appear here
How Chord Length Calculator works
Find circle chord length as 2r sin(θ/2).
Use the same length unit throughout. Areas use squared units and volumes use cubed units. Minor central angle in [0,180] degrees. Inputs and results use floating-point numbers and may be rounded. Results show up to 12 significant digits.
How to use Chord Length 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 minor 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 Chord Length Calculator
Check the supplied example
The starting example produces 5. Find circle chord length as 2r sin(θ/2).
Use your own inputs
Read the labels for circle radius and minor 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 circle chord length as 2r sin(θ/2).
Use the same length unit throughout. Areas use squared units and volumes use cubed units. Minor central angle in [0,180] degrees. 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. Minor central angle in [0,180] degrees. 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.
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Open toolChord Length Calculator: common questions
Answers about using Chord Length 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. Minor central angle in [0,180] degrees. 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.