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Regular Polygon Exterior Angle Calculator

Exterior angle = 360 / n.

Compute the exterior angle of a regular n-gon (sum is always 360°): each = 360 / n. Reports the corresponding interior angle for cross-check.

Daniel Oh By Daniel Oh
Published Last reviewed 1 min read

Inputs

Results

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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Exterior = 360 / n

In depth

Compute the exterior angle of a regular n-gon (sum is always 360°): each = 360 / n. Reports the corresponding interior angle for cross-check.