What you provide
What you provide
- Circle radius expressed in units, using the same scenario as the other inputs
- Central angle expressed in deg, using the same scenario as the other inputs
MATH / PLANE GEOMETRY
Circle Chord Length Calculator
Calculate chord length from circle radius and subtended central angle. Inspect the equation, substituted values, result, assumptions, and interpretation in one guided workspace.
- 01 Calculated in this tab
- 02 Values stay in this browser tab
- 03 Use boundary
Use boundary
Calculation path
Calculate chord length from circle radius and subtended central angle. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.
Calculation path
c=2r sin(theta/2)
What you receive
What you receive
- Chord length in units from the stated equation
- A symbolic formula plus substituted working with your values
- Visible assumptions, field guidance, and an authoritative learning reference
Use boundary
Choose the maximum decimal places shown. This does not increase source accuracy.
The angle is the smaller or larger central angle associated with the intended chord.
Use internally consistent units and retain extra precision when carrying the result into another calculation.
Reviewed reference factors