Regex Generator -- Common Patterns
Find and copy common regex patterns for email, URL, IP address, phone number, date, and more. Free online regex pattern library with live testing.
Frequently Asked Questions
What common regex patterns are included?
This tool includes pre-built patterns for: email addresses, URLs, IPv4 and IPv6 addresses, phone numbers, dates (multiple formats), credit card numbers, hex colors, MAC addresses, and more. Each pattern is tested and ready to use.
Can I test the patterns against my own data?
Yes. Select any preset pattern and it is loaded into the regex tester. Enter your test string and see matches highlighted in real-time. You can modify the pattern to suit your specific requirements before copying it.
Are these regex patterns production-ready?
These patterns cover the most common use cases and are suitable for basic validation. For production systems, consider edge cases specific to your application. For example, the email regex handles standard formats but may need adjustment for unusual valid addresses.
Can I use these patterns in any programming language?
Most patterns use standard regex syntax compatible with JavaScript, Python, Java, PHP, Ruby, and Go. Some features like lookahead/lookbehind may vary between languages. The patterns shown here use JavaScript-compatible syntax.