Regex Generator

Build common regular expressions from readable building blocks.

Processed in your browser — nothing is uploaded

Common patterns

Email address

HTTP(S) URL

UUID

IPv4 address

ISO date (YYYY-MM-DD)

24-hour time

URL slug

Hex colour

Semantic version

Strong password

JWT

Phone (E.164)

Pragmatic email validation — permissive local part, strict domain labels.

Or escape literal text into a safe pattern

verified against “ahmad@example.com”: match

^[\w.!#$%&'*+/=?^`{|}~-]+@[A-Za-z0-9](?:[A-Za-z0-9-]{0,61}[A-Za-z0-9])?(?:\.[A-Za-z0-9](?:[A-Za-z0-9-]{0,61}[A-Za-z0-9])?)+$

Related tools

Test regular expressions with live match highlighting and groups.

Break a regular expression down token by token.

Apply a regex search and replace across text.