Arc Length, Chord and Area of a sector - Geometry Calculator

An easy to use online calculator to calculate the arc length s , the length d of the Chord and the area A of a sector given its radius and its central angle t.


Formulas for arc Length, chord and area of a sector

formulas for arc Length, chord and area of a sector
Figure 1. formulas for arc Length, chord and area of a sector
In the above formulas t is in radians. In this calculator you may enter the angle in degrees, or radians or both.


How to use the calculator

Enter the radius and central angle t in DEGREES , RADIANS or both as positive real numbers and press "calculate". The outputs are the arclength s, area A of the sector and the length d of the chord.

radius =
angle in radians: t =
angle in degrees: t =


for angle in radians
arclength s =
area A = chord d =

for angle in degrees
arclength =
area A = chord d =

More References and links

Sectors and Circles Problems.
Circles, Sectors and Trigonometry Problems with Solutions and Answers.
Online Geometry Calculators and Solvers.

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