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Regex Generator

Generate common regex patterns for email, URL, and more.

Developer GeneratorsBrowser-only • PrivateFree

Matches standard email addresses.

/[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}/g

JavaScriptconst re = /[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}/g;

Pythonre.compile(r"[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}")

PHPpreg_match('/[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}/', $str);

Privacy First: All processing happens locally in your browser. Your data never leaves your device and is never uploaded to any server.

About Regex Generator

The Regex Generator gives you tested regular expressions for the patterns developers reach for most — email addresses, URLs, phone numbers, dates, IP addresses, and more — ready to copy and adapt. It saves you from reinventing a tricky pattern or trusting a random snippet. Everything runs in your browser. Test and tweak the result with the Regex Tester, and apply it with the Find and Replace tool.

How to Use

1Open Regex Generator and paste or type your data into the input area.
2Adjust any available options to match the result you want.
3Your output is generated instantly — no button-clicking required for most tools.
4Use the Copy or Download button to save your result.

Common Use Cases

Generating test data, IDs, and placeholder content
Creating secure passwords, API keys, and secrets
Testing and building regular expressions
Generating SEO files like robots.txt and sitemaps

Frequently Asked Questions

What patterns can it generate?

Common needs like email, URL, phone number, date, time, IP address, hex color, and postal code are covered, giving you a solid starting pattern you can refine for your exact rules.

Should I test the pattern before using it?

Yes. Validation rules vary by context, so paste the generated pattern into the Regex Tester with your real sample data to confirm it matches exactly what you expect.

Is Regex Generator free to use?

Yes. Regex Generator is completely free with no sign-up, no subscription, and no usage limits. Every tool on CodeUtilityKit is free forever.

Is my data safe when I use Regex Generator?

Absolutely. Regex Generator runs entirely in your browser. Your input is processed locally with JavaScript and is never sent to, stored on, or logged by any server — so it is safe even for private or sensitive data.