CALCULATOR
Arc Length Calculator
arc length. Example: Radius: 2 m, Angle in degrees: 60 degrees gives 2.09439510239 m. Circular arc only, excluding straight chord and sector radii. Angle is 0.001..179.999 degrees. Flat Euclidean geometry in the stated units. No waste, thickness, structural advice or curved-earth inference. Only the stated forward job is supported; display rounding does not change the calculation.
Circular arc only, excluding straight chord and sector radii. Angle is 0.001..179.999 degrees. Flat Euclidean geometry in the stated units. No waste, thickness, structural advice or curved-earth inference. Only the stated forward job is supported; display rounding does not change the calculation. Derivation: A full turn has 2π radians and circumference 2πr.
Accepted inputs: Radius: 0.001 to 1,000 m; Angle in degrees: 0.001 to 179.999 degrees.
How the calculation works
arc = radius × angle × π/180
Worked example
With radius 2 m, angle in degrees 60 degrees, arc length is 2.094395102 m.
Assumptions and limits
Circular arc only, excluding straight chord and sector radii. Angle is 0.001..179.999 degrees. Flat Euclidean geometry in the stated units. No waste, thickness, structural advice or curved-earth inference. Only the stated forward job is supported; display rounding does not change the calculation. Derivation: A full turn has 2π radians and circumference 2πr.