Code Explainer
Get a clear, line-by-line explanation of any code snippet tailored to your experience level.
This is an AI tool. The text you enter is sent to our AI service to generate your result. Our own server doesn't store it or use it for training; if it's down, a backup AI provider may handle it. How we handle your input
How to Use Code Explainer
- 1Pick the language — JavaScript, TypeScript, Python, Java, C#, C++, Go, Rust, PHP, SQL or Bash.
- 2Choose who the explanation is for: Beginner (no coding experience), Intermediate Developer, or Senior Developer. This changes the explanation completely.
- 3Paste the code.
- 4Click 'Explain Code'.
- 5Read the explanation alongside the code, and verify anything surprising by running it — an explanation that sounds right is not the same as one that is right.
Frequently Asked Questions
How different are the three audience levels?
Substantially. Beginner explains what a loop is and why the code needs one. Intermediate assumes the language and explains the approach. Senior skips the mechanics entirely and talks about the design decision, the trade-off and what it implies. Picking the wrong one wastes the explanation.
Can it explain code in a language I do not know?
Yes, and that is one of its better uses — reading an unfamiliar Rust or Go function with a beginner-level explanation is a fast way in. Verify anything you then rely on, since you are least able to catch an error in a language you do not read.
Is the explanation always accurate?
No. It is usually right about structure and intent, and it can be confidently wrong about subtle behaviour — operator precedence, async ordering, integer overflow, what a library call actually does. If a detail matters, test it rather than trusting the prose.
Can it explain regular expressions or SQL?
Yes — pick SQL for queries, and regex explanations work well because a regex is exactly the kind of dense thing that is hard to read and easy to describe piece by piece.
Is it safe to paste work code?
Check your employer's policy on third-party AI tools first, and never paste credentials, keys or connection strings. Your code goes to our own AI server over HTTPS, is used once, and is never stored or used for training. If our server is down, a backup AI provider may handle the request under its own data policy.
About Code Explainer
The Code Explainer takes a pasted snippet in one of eleven languages and explains it at one of three levels — for someone with no coding experience, for an intermediate developer, or for a senior one.
The audience setting is the whole tool. A senior-level explanation of a caching function talks about the invalidation strategy and what breaks under concurrency; a beginner-level explanation of the same code explains what a cache is for. Both are correct and only one is useful to any given reader.
Two uses stand out. Reading a language you do not write — an unfamiliar Go or Rust function becomes approachable with a beginner-level explanation regardless of how senior you are elsewhere. And decoding genuinely dense things: regular expressions, nested SQL and clever one-liners are hard to read and straightforward to describe piece by piece.
Explanations are usually right about intent and can be confidently wrong about subtle behaviour — async ordering, precedence, what a library call really does. Where a detail matters, run the code rather than trusting the description, and be extra careful in a language you cannot check yourself. Keep credentials out of anything you paste. Your code goes to our own AI server over HTTPS, is used once, and is never stored or used for training. If our server is down, a backup AI provider may handle the request under its own data policy.