Free utility
Regex Tester
Write a regular expression and test it against sample text with live results. See every match and captured group as you type. Everything runs client-side using your browser's native RegExp engine.
//
2 matches
- hello@remoterama.com
- team@example.org
Quick reference
.any character\ddigit (0–9)\wword char (a–z, 0–9, _)\swhitespace^start of line$end of line*0 or more+1 or more?optional (0 or 1)[abc]any of a, b, c[^abc]none of a, b, c(…)capture groupa|ba or b{2,5}2 to 5 times\bword boundaryExample patterns — click to try, or copy
How to use
- Enter your regex pattern and any flags (g, i, m, s).
- Type or paste the test string below.
- Matches and capture groups update live.
- Adjust the pattern until it matches what you expect.
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