What you provide
What you provide
- Circle radius: Distance from center to the arc.
- Central angle: Angle subtended by the arc from 0 through 360 degrees.
CIRCLE GEOMETRY / CURVED DISTANCE
Arc Length Calculator
Calculate circular arc length from radius and a central angle from 0 through 360 degrees, with radians and circle share.
- 01 Calculated in this tab
- 02 Values stay in this browser tab
- 03 Use boundary
Use boundary
Calculation path
The angle fraction of a 360-degree turn is multiplied by the full circumference at the entered radius.
Calculation path
Arc length = 2 pi r x angle / 360.
What you receive
What you receive
- Arc length
- Full circumference
- Angle in radians and percentage of circle
Use boundary
Choose the maximum decimal places shown. This does not increase source accuracy.
The angle is interpreted in degrees and the arc follows a perfect circle at constant radius.
This is an educational planning result, not a structural, electrical, thermal, solar, battery, generator, or safety design. Confirm specifications, units, codes, and professional requirements before acting.