Sector Calculator - Arc Length and Area (Degrees/Radians)

Sector Calculator

Calculate arc length and sector area using degrees or radians. Get step-by-step solutions for all sector calculations.

Angle Mode

Radius (r)

Angle (θ)

Unit

Calculator Features

Calculate the length of the curved edge

s = r\theta = \frac{\theta}{360°} \times 2\pi r

Find the area of the pie-shaped region

A = \frac{1}{2}r^2\theta = \frac{\theta}{360°} \times \pi r^2

Works with both angle units

\theta_{rad} = \frac{\theta_{deg} \times \pi}{180°}

s = r\theta

A = \frac{1}{2}r^2\theta

s = \frac{\theta}{360°} \times 2\pi r

A = \frac{\theta}{360°} \times \pi r^2

Learn about sectors and arc length

Calculate full circle properties

Calculate ring-shaped region area