Regex Tester

Test, debug, and visualize regular expressions in real-time. See matches, capture groups, and use common regex patterns.

Regular Expression

Enter your regex pattern and configure flags

Test String

Enter the text you want to test against your regex

Results

No matches found

Common Patterns

Click to use common regex patterns

Email

Matches email addresses

\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b

URL

Matches HTTP/HTTPS URLs

https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)

Phone (US)

Matches US phone numbers

$$?([0-9]{3})$$?[-. ]?([0-9]{3})[-. ]?([0-9]{4})

IP Address

Matches IPv4 addresses

\b(?:[0-9]{1,3}\.){3}[0-9]{1,3}\b

Date (MM/DD/YYYY)

Matches MM/DD/YYYY format

\b(0?[1-9]|1[0-2])\/(0?[1-9]|[12][0-9]|3[01])\/(19|20)\d\d\b

Hex Color

Matches hex color codes

#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})

Credit Card

Matches credit card numbers

\b(?:\d{4}[-\s]?){3}\d{4}\b

Username

Matches usernames (3-16 chars, alphanumeric + underscore)

^[a-zA-Z0-9_]{3,16}$

Password

Strong password (8+ chars, mixed case, number, special char)

^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$

HTML Tag

Matches HTML tags

<\/?[a-z][a-z0-9]*[^<>]*>

How to Use

Enter Regex Pattern

Type your regular expression pattern and set flags

Add Test String