Regex Tester & Explainer

Test regular expressions with live match highlighting. Powered by Python's re module. Supports flags: i ignore case · m multiline · s dotall.

Pattern & Test String

Regex Pattern

Enter a Python-compatible regex pattern

Flags (optional)

Space-separated: i = ignore case, m = multiline, s = dotall

Test String

Quick Examples

Results

Enter a pattern and test string, then click Test Pattern

Or click a quick example above to get started

Common Regex Patterns Reference

[\w\.-]+@[\w\.-]+\.\w+Email address

https?://[^\s]+URL

\d{4}-\d{2}-\d{2}ISO date (YYYY-MM-DD)

\+?\d[\d\s\-]{7,}Phone number

#[0-9a-fA-F]{6}Hex colour

\b\d{1,3}(\.\d{1,3}){3}\bIPv4 address

^[A-Za-z0-9._%+-]+@Email local part

\b[A-Z][a-z]+ [A-Z][a-z]+\bFull name

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