Circle Chord Length Calculator

Calculate the length of a chord c = 2 × r × sin(θ / 2) in a circle from radius and central angle.

How It Works & Processing Standards

Enter values above to calculate results automatically. Check each input field for guidance and units.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Maximum input length: 100,000 characters

Circle Chord Length Calculator is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use Circle Chord Length Calculator

  1. 1
    Enter Circle RadiusType radius length.
  2. 2
    Enter Central Angle (°)Type central subtended angle in degrees.
  3. 3
    View Chord LengthRead straight-line chord length.

Common Use Cases

  • Carpentry arched window header framing
  • Measuring straight-line drill patterns on circular flanges
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