Regex Tester
Test, validate, debug, and learn regular expressions with real-time matching, highlighting, capture groups, and advanced pattern explanations.
Regex Pattern
/
/
Test Results
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Pattern Explanation
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Find & Replace
Regex Reference
Character Classes
\d → Digits (0-9)\w → Word characters\s → Whitespace. → Any characterQuantifiers
* → Zero or more+ → One or more? → Optional{n,m} → RangeAnchors
^ → Start of string$ → End of string\b → Word boundaryPopular Use Cases
Email Validation
^[^\s@]+@[^\s@]+\.[^\s@]+$
Phone Numbers
^\+?[\d\s\-\(\)]{10,}$
Strong Passwords
^(?=.*[a-z])(?=.*[A-Z])(?=.*\d).{8,}$
URL Extraction
https?:\/\/[^\s]+
About This Regex Tester
This free Regex Tester by Irrol helps developers, students, and website owners test and debug regular expressions directly in the browser. You can validate patterns, inspect matches, visualize capture groups, and perform real-time replacements.
The tool supports advanced regex flags, live highlighting, match explanations, and common regex templates for email validation, URLs, passwords, phone numbers, and more.