Regex Character Class Builder

Combine digits, lowercase, uppercase, word, whitespace, custom characters, and optional negation into a copy-ready character class.

Digits 0-9

Lowercase a-z

Uppercase A-Z

Whitespace \s

Word shortcut \w Negated class

Custom literal characters

—

ReadyCustom ], -, ^, and backslash characters are escaped for use inside a JavaScript character class.

How to use this Regex Character Class Builder

Build a regex character class from common ranges and custom literal characters. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.