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Free AI developer tool

Regex Generator

Describe what you want to match — emails, dates, phone numbers, URLs or your own format — and get a regular expression with a plain-English breakdown and examples.

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Result
Your result will appear here.
3 simple steps

How it works

  1. 1

    Describe the pattern

    What should match, and anything that shouldn't.

  2. 2

    Pick your language

    So the syntax and flags are right.

  3. 3

    Test and use it

    Copy the regex and try the examples in your code.

Regular expressions without the guesswork

Regular expressions are incredibly useful and notoriously hard to read. The VirtuaChat Regex Generator writes the pattern for you from a plain description and explains every part, so you understand what you're pasting into your code.

Choose the flavour — JavaScript, Python, PHP (PCRE), Java, .NET, Go or POSIX — and describe what should and shouldn't match. You get the regex, a token-by-token breakdown, examples of strings that match and strings that don't, and the flags you need. For validating input, it also notes where a regex alone isn't enough (email addresses are a classic example).

Paste an existing regex into the description to have it explained or fixed instead.

Any flavour

JavaScript, Python, PHP, Java, .NET, Go and POSIX.

Token-by-token

Every part of the pattern explained in plain words.

Match examples

Strings that match — and ones that don't — so you can check it.

Frequently asked questions

The generator writes the pattern carefully and gives match / no-match examples, but it doesn't run code. Test it with your real data, for example with an online regex tester.

Yes. Paste the regex into the description and ask for an explanation — you'll get a token-by-token breakdown.

The one your code uses: JavaScript for browsers and Node.js, Python's re module, PHP's preg_ functions (PCRE), Java, .NET or Go. Syntax for lookbehinds and named groups differs between them.

No. Remove API keys, passwords, tokens and personal data before pasting code or data. VirtuaChat doesn't store what you type, but it's good practice never to share secrets with any online tool.

Yes. You can use the Regex Generator free every day, no sign-up needed. A free VirtuaChat account raises your daily limit and adds 100 credits for the AI chat, and paid plans remove the limits altogether.

Want to go further?

Open the result in the VirtuaChat chat and refine it in plain words — shorter, warmer, more detailed.

Try the AI chat