Angular Misclose Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserIntermediate
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the number of angles and the measured angle sum.
- Press Calculate.
- Read the angular misclose and per-angle correction.
How it works
Interior angles of an n-sided closed figure should sum to (n − 2) × 180°. The misclose is the difference, spread equally across the angles.
Worked example
5 angles summing to 540.05°. Misclose +180″, correction −36″ per angle.
Frequently asked questions
Interior or exterior angles?
This uses interior angles. Exterior angles of a closed figure sum to (n + 2) × 180°.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.