Regex Generator

Describe what you want to match in plain English, or choose a common pattern. Get a ready-to-use regular expression with live testing and explanation.

Common Patterns

Regex Pattern

Global (g) Case Insensitive (i) Multiline (m)

Test String

How to Use

Click a Common Pattern button to load a preset, or type your own regex.
Toggle flags (Global, Case Insensitive, Multiline) as needed.
Paste sample text in the Test String area.
Click Test Regex to see highlighted matches and a match count.
Click Copy to copy the regex to your clipboard.

Frequently Asked Questions

What programming languages support these regex patterns?

The patterns generated use JavaScript-compatible regex syntax, which is also compatible with most languages including Python, Java, PHP, Ruby, and Go with minimal modifications.

Can I modify the generated patterns?

Yes! The pattern field is editable. You can load a preset and then customize it to fit your exact needs.

Is this tool free?

Completely free, no signup required. All processing happens in your browser.