AI Regex Generator
Describe your pattern in plain English — get a perfect regular expression instantly.
No more struggling with regex syntax. Just tell our AI what you want to match, and it generates accurate, optimized regular expressions with explanations.
/^[a-zA-Z0-9._%+\-]+@[a-zA-Z0-9.\-]+\.[a-zA-Z]{2,}$/iExplanation
Matches valid email addresses. Allows letters, digits, dots, plus signs, underscores and hyphens before the @, then a domain name with a TLD of at least 2 characters.
↑ Describe your pattern above — AI generates regex like this plus test cases and multi-language snippets
Why Use Our AI Regex Generator?
🧠 Natural Language Input
Describe what you want to match in plain English. No need to memorize cryptic regex syntax like (?<=\w)\s+(?=\w).
📖 Built-in Explanations
Every generated regex comes with a breakdown explaining what each part does. Learn regex while you use it.
🧪 Live Testing
Test your regex against sample text instantly. See matches highlighted in real-time before you copy it.
🎯 Multiple Flavors
Generate regex for JavaScript, Python, PCRE, .NET, Java, and more. Each flavor has its own syntax nuances.
How It Works
Describe Your Pattern
Type what you want to match in plain language. For example: "Match email addresses", "Find phone numbers in US format", or "Validate a strong password".
(Optional) Add Examples
Provide sample text that should match (and optionally, text that should NOT match) for better accuracy.
Get Your Regex
Receive a tested regular expression with the pattern, plain English explanation, sample matches, and copy-ready code for your language.
Common Use Cases
Form Validation
- Email addresses
- Phone numbers (various formats)
- Password strength requirements
- Credit card numbers
- ZIP/postal codes
Data Extraction
- URLs from text
- Dates in various formats
- Product SKUs or IDs
- Hashtags and mentions
- IP addresses
Text Processing
- Remove extra whitespace
- Split camelCase words
- Find duplicate words
- Extract specific file extensions
- Parse log files
Advanced Patterns
- Lookaheads and lookbehinds
- Non-capturing groups
- Conditional patterns
- Recursive patterns
- Unicode character classes
Supported Regex Flavors
| Flavor | Use Case |
|---|---|
| JavaScript | Web development, Node.js, browser validation |
| Python | Data science, scripting, backend development |
| PCRE | PHP, Apache, nginx, command-line tools |
| .NET | C#, VB.NET, ASP.NET applications |
| Java | Android development, enterprise applications |
| Go | Go programming language |
| Ruby | Ruby on Rails, scripting |
FAQ
Is the AI regex generator free?
Yes! Our core regex generation and testing tools are completely free with no registration required. Premium plans offer schema storage and team features.
How accurate is the generated regex?
Our AI is trained on thousands of regex patterns and handles common to moderately complex patterns with high accuracy. For edge cases, you can refine your description or test with sample data.
Can I test the regex before using it?
Absolutely! Our built-in regex tester lets you validate patterns against sample text instantly. See matches highlighted in real-time.
Do you explain how the regex works?
Yes, every generated regex includes a detailed breakdown explaining each component. It's a great way to learn regex syntax.