Angular Misclose Calculator
Compares summed interior angles against the theoretical total and reports the angular misclose and correction.
Enter Values
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
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
- Traverse Misclose Calculator
- Traverse Closure Ratio Calculator
- Exterior Angle Balance Table
- Interior Angle Balance Table
- Latitudes and Departures Tutor
- Basic Traverse Table Builder
Explore more in Surveying, Coordinates, GIS & CAD.
Cite this tool
Zerdly. (2026). Angular Misclose Calculator. Retrieved from https://www.zerdly.com/tools/angular-misclose-calculator/
Tip: Enter any known values to calculate the remaining results.
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