AI Regex Generator
build patterns with AI assistance
Transform plain English into working regular expressions. AI-powered pattern generation with explanations and code examples.
Common Patterns:
What is a Regex Generator?
A regex generator (regular expression generator) converts natural language descriptions into working regex patterns. Our AI-powered tool creates patterns, explains them, and provides code examples in 6+ programming languages.
Whether you need to validate email addresses, parse log files, or extract data from text, our generator helps you create accurate patterns without memorizing complex regex syntax.
Generate regex patterns in 3 steps
Describe Pattern
Explain what you want to match in plain English
AI Generates Regex
Get instant regex pattern with detailed explanation
Test & Copy Code
Test with examples, copy code for your language
Powerful regex generation features
AI-Powered Generation
Advanced AI creates accurate regex patterns from natural language
Multi-Language Support
Get code snippets for JavaScript, Python, PHP, Java, Go, and C#
Pattern Explanation
Understand every part of the regex with detailed breakdowns
Real-time Testing
Validate patterns instantly with built-in regex tester
Code Snippets
Copy-ready code examples for immediate use in your projects
Common Patterns Library
Quick access to frequently used regex patterns
Common Questions About Regex
What is a regular expression?
A regular expression (regex) is a pattern used to match, search, and manipulate text. Regular expressions are powerful tools used across all programming languages for tasks like form validation, data extraction, and text processing. They use special characters like ., *, +, and ? to define flexible matching patterns that can find complex string patterns efficiently.
Which programming languages are supported?
Our regex generator provides code snippets for 6 programming languages: JavaScript, Python, PHP, Java, Go, and C#. Each snippet shows the correct syntax for that language, including how to create the regex object and test strings against it. The core regex pattern works across all languages with only minor differences in how you use it in code.
How accurate are AI-generated regex patterns?
AI-generated regex patterns are highly accurate for common use cases like email validation, phone numbers, URLs, and data extraction. Our AI understands regex syntax and best practices, creating patterns that are both accurate and efficient. However, we always recommend testing the pattern with your specific data using our built-in tester to ensure it matches your exact requirements.
Can I test the regex before using it?
Yes! Our tool includes a real-time regex tester built right into the interface. You can input test strings and immediately see if they match your pattern with visual checkmarks or X marks. Add multiple test cases to validate different scenarios, and the tester updates instantly as you modify your pattern or test inputs.
What are common regex patterns?
Common regex patterns include email validation, phone number formatting, URL matching, IP addresses, dates, passwords, slugs, and hex colors. Our tool provides quick access to these frequently used patterns through the “Common Patterns” buttons. Each generates a properly formatted regex for that specific use case, complete with explanation and test cases.
Frequently asked questions
Need faster pattern generation?
WhisperCode transforms your voice into regex patterns instantly. Describe what you want to match and get working patterns with AI-powered voice commands.
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