Big-O Complexity Analyzer
Estimate clearly supported JavaScript and TypeScript function complexity locally, with evidence and explicit limits.
big-o-analyzerLOCAL WORKSPACE
Your code stays in this browser. This tool does not run it or guess unsupported complexity.
Examples
Paste a named function or load an example.
How to use this tool
Use a small supported function to identify loop growth, then compare the estimate with a code review and real workload measurements.
When not to use it
Do not treat an estimate as a profiler result or as proof that unsupported syntax is efficient.