Regex Tester
Test regular expressions against text and inspect each match, index and capture group. Free to use online with no sign-up.
Enter a pattern, flags and test text to debug JavaScript-compatible regular expressions.
Frequently asked questions
- Is Regex Tester free to use?
- Yes. The tool is free to use and does not require an account.
- Is my input stored?
- Browser-based tool inputs normally stay on your device. Tools that rely on an external reference-data service, such as currency exchange, request only the information needed for that lookup.