Developer

Regex Tester

Test, debug, and validate regular expressions with real-time matching results.

Regex Tester

Test and debug regex patterns in real time.

Example /\d+/g
Test Text Live Input
Result Highlighted Matches
Matches: 0
No matches yet. Start typing to test.
Match List
    Ready to test your regex.
    FAQ

    Common questions about Regex Tester

    Quick answers to help you understand what Regex Tester does and how to use it effectively.

    What is Regex Tester used for?

    Test and debug regular expressions in real time with live matches, capture groups, and flags. In Lite-Tools, this tool is listed in the Developer category.

    How do I use Regex Tester?

    Open Regex Tester, enter your input, review the result, and copy or download the output if needed.

    Is Regex Tester free to use?

    Yes. It is available online with no sign-up required, so you can start using it right away.