The Free Online Regex Tester makes it simple to experiment with regular expressions and check whether your patterns work as expected. Just enter your sample text, type in a regex pattern, and instantly see matches. It’s a quick way to debug and learn regular expressions without needing any external software.
Regular expressions (regex) are powerful for searching, replacing, and validating text in programming and data processing. Whether you’re a developer working on code validation, a data analyst cleaning datasets, or a student learning regex, this free tool helps you test patterns directly in your browser. No installation required — fast, reliable, and always free.
Free Regex Tester
Test and validate your regular expressions instantly. Enter a regex pattern and some text, and see matches highlighted below.