RegexPro
Test your regular expressions in real-time with a professional tool
Regex Tester
Regex Examples
Click on any example to try it out
Email Address
Matches standard email format
IPv4 Address
Matches IPv4 addresses
URL
Matches HTTP/HTTPS URLs
SSN
Matches Social Security Numbers
Phone Number
Matches US phone numbers
Capitalized Words
Matches words starting with capital letter
Regex Tester – Free Online Regular Expression Tool
The Regex Tester helps you test and debug your regular expressions instantly. Whether you’re matching text, validating input, or parsing data, this tool gives you live regex feedback.
🔹 What Is a Regex?
A Regular Expression (Regex) is a powerful syntax used to search, match, and manipulate strings. For example, the regex ^[A-Za-z0-9]+$ validates alphanumeric text.
🔹 How to Use Regex Tester
- Enter your regex pattern in the first box.
- Enter the test text in the second box.
- Click Test Regex.
- Matched text will highlight instantly.
🔹 Features
- ✅ Real-time regex matching
- ✅ Supports global and case-insensitive flags
- ✅ Highlights captured groups
- ✅ Works for complex multiline regex
- ✅ 100% local – no data upload
🧠 Example
Regex: \d{3}-\d{2}-\d{4}
Text: My SSN is 123-45-6789
Match: ✅ 123-45-6789
🔹 Common Use Cases
- Email validation
- Extracting numbers or words
- Replacing patterns in code
- Form input verification
🔹 FAQs
1. Is Regex Tester free?
Yes, fully free for unlimited use.
2. Can I test multiline patterns?
Yes, it supports global and multiline flags.
3. Is my data saved?
No, all testing happens in your browser for privacy.
🔹 Related Tools
🔹 Conclusion
The Regex Tester is a must-have for every coder who works with string patterns or validation. It’s fast, secure, and beginner-friendly — perfect for both learners and pros.