Regex Tester
Test and Validate Regular Expression Patterns with Live Results
Test your regular expressions in real-time with instant feedback. Features syntax highlighting, match visualization, and detailed pattern explanations.
Input
Result
Try These Examples
Email Validation
Validate email addresses
Regex Pattern:
^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$Sample Text:
user@example.com invalid-email test.email+tag@domain.co.uk @invalid.com user@ valid@test.org
Phone Number Extraction
Extract US phone numbers
Regex Pattern:
\(?([0-9]{3})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})Sample Text:
Call me at (123) 456-7890 Or reach me at 987-654-3210 Also try 555.123.4567 Invalid: 12-345-6789
URL Matching
Match HTTP/HTTPS URLs
Regex Pattern:
https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)Sample Text:
Visit https://www.example.com Or check http://test.org/path?query=1 Also see https://subdomain.site.co.uk/page Not a URL: www.incomplete
Date Extraction (MM/DD/YYYY)
Extract dates in MM/DD/YYYY format
Regex Pattern:
(0[1-9]|1[0-2])\/(0[1-9]|[12][0-9]|3[01])\/(19|20)\d{2}Sample Text:
Born on 03/15/1990 Graduated 12/25/2010 Started work 01/01/2020 Invalid: 13/45/2021 Also invalid: 02/30/2020
Password Strength
Check password contains uppercase, lowercase, digit, and special char
Regex Pattern:
^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$Sample Text:
Password123! weakpass STRONG123 GoodPass1 Excellent@Pass123 short1A!
HTML Tag Removal
Remove HTML tags from text
Regex Pattern:
<[^>]*>Sample Text:
<p>This is a paragraph</p> <div class='container'>Content here</div> <br/> <img src='image.jpg' alt='test'> Plain text without tags
What is Regex?
A regular expression (regex or regexp) is a sequence of characters that define a search pattern. It is mainly used for string pattern matching or pattern matching, etc.
They can be used to search, edit, or manipulate text and data. Regular expressions are widely used in programming languages, text editors, and command-line tools for pattern matching and text processing.
Common Use Cases:
• Email validation and extraction
• Phone number formatting and validation
• Data cleaning and text preprocessing
• Log file analysis and parsing
• Search and replace operations
• Input validation in web forms