Natural language → regex

AI

Describe the text you want to match or validate. You'll get a suggested JavaScript-style pattern, flags, and short technical notes. Always test in the Regex tester before using on untrusted input.

Describe the match

?
Write in English. The model suggests a JavaScript RegExp pattern and flags. Always test edge cases in the Regex tester—patterns can be wrong or unsafe for untrusted input.
Regex tester

Nearby workflows on Toolcore

Common use cases

  • Turn a fuzzy English description into a starting JavaScript RegExp and flags.
  • Explore alternative phrasings when your first pattern misses edge cases.
  • Document what a legacy regex was trying to do for teammates who think in prose.

Common mistakes to avoid

  • Deploying untested patterns on untrusted input

    Regex can be catastrophic or wrong. Always test in the Regex tester and consider limits in your runtime.

  • Assuming dialect matches Python, PCRE, or RE2

    Output targets JavaScript-style regex. Translate carefully for other engines.

FAQ

Is pattern generation server-assisted?

When configured, your description may be processed remotely—avoid sensitive examples.

Should I still learn regex syntax?

Yes. Explanations help, but maintenance and security reviews need human understanding of the final pattern.

Common search terms

Phrases people search for that match this tool. See the full long-tail keyword index.

  • natural language to regex
  • describe pattern get regex

More tools

Related utilities you can open in another tab—mostly client-side.