Cyclomatic Complexity Calculator

Paste one function and get its cyclomatic complexity score - decision points + 1, the number of independent paths you'd need to test.

Paste one function

Moderate

Still reasonable, but worth watching if it keeps growing.

Pattern-based, same idea as the AST-based analysis in full Repository Analysis, scoped to one pasted function instead of your whole codebase.

Was this tool helpful?

See this same kind of analysis applied to your whole repository

Call graphs, dead code, blast radius, and a health score. Results in 60 seconds, free.

Related tools

Dependency Graph Visualizer

Paste package.json - dependencies grouped by type, plus packages listed twice with conflicting versions.

Git-History Risk Scoring

Paste a real GitHub repo - bus factor and ownership risk from its actual commit history, not a paste-one-file estimate.

Blast Radius Explorer

Paste a real GitHub repo, pick a file, see exactly what breaks if you change it - the real reverse-dependency graph.

Dead Code Finder

Paste a real GitHub repo - functions with zero known callers, traced from the real call graph.

Dependency Hygiene Checker

Paste a real GitHub repo - packages imported in code but never declared in any package.json.

Runs entirely in your browser. Nothing is stored. Free forever.