Regex builder

Build patterns with clarity.

Create, test, and understand regular expressions in a calm, guided workspace designed to feel effortless.

Pattern builder

Choose a token and build the pattern step by step.

Literal text

Press Enter or tap the button to add it as a literal token.

See the live pattern and its explanation in one place.

/^$/

Try a sample string against the regex instantly.

Sample text

Quick reminders for the most common patterns.

Any single character

Any digit

Any word character

Any whitespace

One or more

Zero or more

Optional

^ $

Start or end of string