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Regex Tester & AI Regex Generator | Online Regular Expression Tool
Looking for a fast, reliable, and free regex tool? Our AI Regex Generator and Tester helps you create, test, and understand regular expressions instantly. Whether you’re a beginner or a seasoned developer, you can quickly build and debug regex patterns using our AI-powered tool below.
Example Regex Patterns
Email Validation
^[\w-.]+@([\w-]+\.)+[\w-]{2,4}$
test@example.com
10-Digit Phone Number
^\d{10}$
1234567890
Extract All Numbers
\d+
Your order: 3894 items
Password (8+ chars, 1 letter, 1 number)
^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d]{8,}$
myPassw0rd
Extract URLs
(https?://[^\s]+)
Visit https://csnainc.io
How to use:
- Extraction mode (default): finds all matches (emails, numbers, etc.) inside text. For full input validation (like forms), turn this off.
- Try prompts like: "Find all hashtags in a tweet", "Extract image file names ending in .jpg or .png", "Validate a password with 8-16 chars, letter, and number"
- For case-insensitive matches (like image files), enable Ignore case.
How To Use This Regex Tool?
- Paste your sample text and enter or generate a regex pattern.
- Toggle “Extraction mode” to find all matches or validate the entire input.
- Use the AI-powered regex generator to create patterns from plain English descriptions.
- Test with common patterns like email, phone, or URL — or build your own.
- Copy, export, and share your results instantly.
Why Use This Regex Tester & Generator?
Tired of complicated regular expression tools? Our free online regex tester and AI regex generator make pattern building fast and easy for everyone. Whether you’re a developer, analyst, or just curious, you can test, generate, and understand regex instantly—no sign-up required.
Instant AI Regex Generation
Create powerful regex patterns instantly using AI. No coding skills needed.
Live Pattern Testing
See real-time results as you type. Test, validate, and understand your regex fast.
Easy Copy & Export
Copy regex, matches, or export results in one click. Save time and boost productivity.