Regex Builder & Regex Generator Online

What is a Regex Builder?

A regex builder helps developers generate regular expressions without writing them manually. Regular expressions (regex) are patterns used to match text strings. Developers often use them to validate email addresses, phone numbers, URLs, passwords and other text formats.

Why Use a Regex Generator?

• Create regex patterns faster
• Avoid complex regex syntax errors
• Test patterns instantly in the browser
• Generate common validation patterns

Example Regex Patterns

Email: [A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}

Phone: \+?\d{10,13}

Date: \d{4}-\d{2}-\d{2}

Regex Cheat Sheet