Free RegEx Tester

Test and debug regular expressions in real time. See live match highlighting, group captures and match count. All JS regex flags supported.

💻 RegEx Tester

Regular Expression

/ /

Test String

Quick Patterns

Frequently Asked Questions

All JavaScript regex flags: g (global), i (case-insensitive), m (multiline), s (dotAll), u (unicode), y (sticky). Enter multiple flags like 'gi' or 'gim'.

Wrap parts of your pattern in parentheses. For example, (\d{4})-(\d{2})-(\d{2}) captures year, month and day separately. Group captures are shown in the match list.

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