Regex Tester

Test regular expressions in real time with highlighted matches. Supports all JavaScript regex flags. Runs entirely in your browser.

/ /

Matches: 0 Groups: 0

Quick Reference Cheatsheet

. — Any char

\d — Digit

\w — Word char

\s — Whitespace

^ — Start

$ — End

* — 0 or more

+ — 1 or more

? — 0 or 1

{n,m} — Between n–m

[abc] — Char class

(abc) — Group

a|b — Or

\b — Word boundary

(?=...) — Lookahead

(?!...) — Neg lookahead

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