🔍 Regex Tester

Test and validate regular expressions with real-time matching

Regular Expression Pattern

/ /

Example: \d{3}-\d{3}-\d{4} (for phone numbers)

Options

Ignore Case (i)

Multiline (m)

Singleline (s)

Test String

📚 Common Regex Patterns:

\d{3}-\d{3}-\d{4} - Phone number (123-456-7890)
[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,} - Email
^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d]{8,}$ - Password (8+ chars, letter + number)
\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b - IP Address

^(https?:\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\/?$ - URL
^\d{5}(-\d{4})?$ - US Zip code
^#?([a-f0-9]{6}|[a-f0-9]{3})$ - Hex color
^\d{4}-\d{2}-\d{2}$ - Date (YYYY-MM-DD)

Note: All regex testing happens on the server. Your patterns and test strings are not stored.

What is a Regex Tester?

A regex tester allows you to test and debug regular expressions in real-time. It helps developers validate patterns used for searching, matching, and replacing text.

Why Use a Regex Tester?

Validate regex patterns instantly
Debug matching issues
Improve coding efficiency
Learn regex faster

Common Regex Use Cases

Email validation
Phone number matching
Form validation
Data extraction

Frequently Asked Questions

Regex (Regular Expression) is a pattern used to match and manipulate text.

Flags modify regex behavior, such as global matching (g), case-insensitive (i), and multiline (m).

Yes, this regex tester is completely free to use.

Test Regex Instantly

Validate patterns and debug expressions easily with this free tool.