Developer Utilities · Free tool
Regex Builder
Build regex from checkboxes — digits, letters, anchors, groups — with a live preview against your test text.
Updated April 2026
//
Email me at ada@example.com or grace@example.org — thanks!
Broken: not@mail
2 matches
Email me at or — thanks! Broken: not@mail
What it does
Build a regex visually: add patterns, groups, quantifiers, and anchors. Live-test against sample strings without memorizing the syntax.
How to use it
- Describe what you want to match.
- Click to add groups and modifiers.
- Test against sample input.
- Copy the final pattern.