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TimeComplexity.ai is an online asymptotic complexity calculator that uses AI to analyze your code and estimate runtime in Big O notation.
You can paste a function or algorithm fragment without extra boilerplate like main, headers, or imports. The tool attempts to infer time complexity even when the snippet is partially incomplete.
Along with outputs like O(1), O(n), or O(n log n), TimeComplexity.ai provides a short explanation of how it arrived at the estimate—looking at loops, recursion, and data operations that contribute to the final complexity. This makes it useful both for quick checks and for learning algorithm analysis.
TimeComplexity.ai can help students preparing for algorithm interviews, instructors, and working developers who want a rough efficiency estimate. Since AI-based analysis can be inaccurate, treat the result as guidance rather than a formal proof.