Regex Tester

Test regular expressions against sample text and see matches instantly. Use the collapsible reference below the answer area to build patterns faster.

How to use it

Enter a regex pattern in the first field.
Paste sample text in the second field.
Click "Test Regex" to see matching text immediately.
Open the regex reference below the result box for common structures and examples.

Practical example

Pattern: \b[a-z]+\b

Text: learn faster with smart utility lab

Output: learn, faster, with, smart, utility, lab

Example: [A-Z] matches uppercase letters, while \d matches digits.

Frequently asked questions

Can I use flags?Not in this version, but you can still test many common patterns.

Is it accurate?Yes. It uses the browser's native RegExp engine.

Where can I learn the regex pieces?Open the reference below the answer area for common character sets, anchors, quantifiers, groups, and lookarounds.