Regex Tester

Test your regular expressions in real-time with this interactive tool

Flags:
Test String
Replacement String
Match Results
Matches found: 0

How to use this Regex Tester:

  • Enter your regular expression in the pattern field
  • Select the appropriate flags (like i for case-insensitive)
  • Enter text to test against in the Test String area
  • Click Test Regex to see matches
  • Optionally enter a replacement string and click Replace Matches

Common Regex Patterns:

  • Words: \b\w+\b
  • Emails: \S+@\S+\.\S+
  • URLs: https?://\S+
  • Digits: \d+
  • Dates: \d{4}-\d{2}-\d{2}
  • Hex colors: #[0-9a-fA-F]{6}

All processing is done in your browser - your text never leaves your computer