Traverse Closure Ratio Calculator
Expresses traverse accuracy as a one-in ratio from the misclose and total perimeter.
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 linear misclose and the total traverse length.
- Press Calculate.
- Read the closure ratio.
How it works
Closure ratio = 1 : (total length ÷ linear misclose). A bigger second number is better (e.g. 1:10,000).
Worked example
0.05 m over 1,850 m. ≈ 1:37,000.
Frequently asked questions
What ratio do I need?
It depends on the survey class — common thresholds range from 1:5,000 to 1:20,000 or tighter. Check your spec.
Related tools
- Traverse Misclose Calculator
- Survey Tolerance Checker
- Grade & Fall Calculator
- Latitudes and Departures Tutor
- Rise and Fall Levelling Worksheet
- Angular Misclose Calculator
Explore more in Surveying, Coordinates, GIS & CAD.
Cite this tool
Zerdly. (2026). Traverse Closure Ratio Calculator. Retrieved from https://www.zerdly.com/tools/traverse-closure-ratio-calculator/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.