Insert the information in the form and the calculator will determine the arc length.

What is the arc length?

Arc length is the distance between two points along a section of a curve. Determining the length of an irregular arc segment by approximating the arc segment as connected line segments is also called curve rectification.

How to calculate arc length?

To calculate arc length you should use the following formula:
s = (Φ/360) * 2 * π * r
where:
s = arc length in radians
r = radius
Φ = central angle in radians

Why use arc length formula?

The arc length formula is used in order to measure the distance along the curved line making up a segment of a circle (arc).