🧪 Regex Tester

Test and debug regular expressions with real-time matching and explanations

Regular Expression Pattern:

Pattern will be automatically wrapped with delimiters if not provided

Modifiers:

i m s x u

Test String:

Enter the text you want to test your regular expression against

Replace Pattern:

Replace With:

💡 Quick Reference

Common Patterns:

[A-Za-z]+ - Match letters
\d+ - Match digits
\w+@\w+\.\w+ - Basic email
\b\w{5}\b - 5-letter words
^.{1,50}$ - 1-50 characters

Modifiers:

i - Case insensitive
m - Multiline matching
s - Dot matches newline
x - Extended mode
u - Unicode support