Regex Tester with AI Explanation

Test regular expressions with live matching, highlighting, and AI-powered explanations.

Common Patterns

Regular Expression Pattern

//

Flags: g (global), i (case-insensitive), m (multiline)

Test String

Matches Found: 0

Quick Reference:

Character Classes:

\d - Digit [0-9]
\w - Word character
\s - Whitespace
. - Any character

Quantifiers:

* - 0 or more
+ - 1 or more
? - 0 or 1
{n,m} - Between n and m

Anchors:

^ - Start of string
$ - End of string
\b - Word boundary
(...) - Capture group