Arc Length Calculator
From Radius & Angle (Degrees)
From Radius & Angle (Radians)
From Arc Length & Radius
Formula
Arc = r * theta | theta(rad) = degrees * pi/180
Frequently Asked Questions
How do you calculate arc length?
Arc length = radius * angle (in radians). If the angle is in degrees, first convert: radians = degrees * pi / 180.
What is the difference between arc length and chord length?
Arc length is the curved distance along the circle, while chord length is the straight-line distance between the two endpoints of the arc.
You may also need
+
Sector Area Calculator
Free sector area calculator. Calculate the area, arc length, and perimeter of a circular sector.
Math+
Chord Length Calculator
Free chord length calculator. Calculate the chord length, sagitta, and segment area from radius and central angle.
Math+
Area of Circle Calculator
Free circle calculator. Calculate area, circumference, and diameter of a circle from radius, diameter, or area.
Math