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Cyclomatic Complexity Calculator
Compute McCabe cyclomatic complexity from a control flow graph.
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Cyclomatic complexity
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Compute McCabe cyclomatic complexity from a control flow graph.
Cyclomatic Complexity Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: M = E – N + 2P.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Cyclomatic Quick Guide
Typical values for reference.
| Edges | Nodes | Components | Complexity |
|---|---|---|---|
| 14 | 11 | 1 | 5 |
| 5 | 5 | 1 | 2 |
| 20 | 14 | 1 | 8 |
| 40 | 20 | 1 | 22 |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Cyclomatic Complexity Calculator FAQ
Answers to common questions about this calculator.
A count of independent paths through code.
10 or less per function.
Split functions and simplify branches.
For a single function, yes.