Arc area, arc length, chord length calculator

Radius (r):
Arc angle (a):
Arc area:
Arc length:
Chord length:

1. Circle area = π * r2

2. Circle circumference = 2 * π * r

3. Arc area (shaded) = r2 * (a - sin(a)) / 2

4. Arc length = r * a

( Note: The unit is radians.)


An Arc Area, Arc Length, and Chord Length Calculator is a tool used to compute various properties of a circular segment or arc based on given inputs such as radius, central angle, or chord length.

Why use an Arc Area, Arc Length, and Chord Length Calculator?

Manually calculating these values involves complex trigonometric and geometric formulas. A calculator simplifies the process, reducing errors and saving time. It is useful in engineering, architecture, physics, and even everyday tasks like measuring curved objects.

When is this calculator used?

  • Engineering & Construction: Designing curved structures, bridges, and roads.
  • Architecture & Design: Creating curved layouts or objects.
  • Physics & Mechanics: Motion along curved paths.
  • Cartography & Navigation: Measuring curved distances.
  • Machining & Manufacturing: Cutting arcs or curved surfaces accurately.