Geometry

Central Angle Calculator

Central angle from arc length and radius (degrees).

Angle (rad)

Angle (°)

This free Central Angle Calculator covers Central angle from arc length and radius (degrees).

θ in radians is s/r. Other geometry tools are linked below.

Central Angle Calculator — how it works

Central angle from arc length and radius (degrees). Typical inputs are Arc length s and Radius r. How it works beside the form states the identity the Central Angle Calculator applies.

FAQ

How do I use the Central Angle Calculator?

Open the Central Angle Calculator, fill Arc length s and Radius r, and read the result. θ in radians is s/r.

What formula does the Central Angle Calculator use?

The Central Angle Calculator uses the identity in How it works. In words: θ in radians is s/r.

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