Cyclomatic Complexity Calculator for C++
Get the cyclomatic complexity of C++ functions and methods online. Free and private: runs in your browser.
Paste C++ code to see the McCabe complexity of each function, including class methods and templates.
Runs entirely in your browser. Nothing you paste is uploaded or stored.
Use cases
- Check a function before opening a pull request.
- Explain a review comment with numbers instead of opinions.
- Find the riskiest code to refactor first.
Frequently asked questions
Why does complexity matter in C++?
Complex C++ functions are harder to cover with tests and are where memory and edge-case bugs hide. Keeping functions under 10 makes reviews and testing much easier.
Is the Cyclomatic Complexity Calculator for C++ free?
Yes. It is free with no sign-up, and it runs entirely in your browser, so your input is never uploaded or stored.
How accurate is a browser-based code check?
It uses fast heuristics on the snippet you paste, so it is great for quick feedback. For whole repositories, cross-file analysis and history, run a full CodeInspector scan.
Related tools
Track complexity, duplication and code smells across your whole codebase with CodeInspector.