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Matches valid email addresses with standard format
^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$Examples:
user@example.comtest.email+tag@domain.co.ukMatches US phone numbers in various formats
^\+?1?[-. ]?\(?([0-9]{3})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$Examples:
(555) 123-4567+1-555-123-4567Matches Chinese mobile phone numbers (11 digits starting with 1)
^1[3-9]\d{9}$Examples:
1381234567818987654321Matches HTTP and HTTPS URLs
^https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)$Examples:
https://example.comhttp://www.site.org/path?query=1Matches US date format MM/DD/YYYY
^(0[1-9]|1[0-2])\/(0[1-9]|[12]\d|3[01])\/(19|20)\d{2}$Examples:
01/15/202412/31/2023Matches ISO date format
^\d{4}-\d{2}-\d{2}$Examples:
2024-01-152023-12-31Matches valid IPv4 addresses
^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$Examples:
192.168.1.110.0.0.1Matches IPv6 addresses (simplified format)
^([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$Examples:
2001:0db8:85a3:0000:0000:8a2e:0370:7334fe80::1Matches US Social Security Numbers with dashes
^\d{3}-\d{2}-\d{4}$Examples:
123-45-6789987-65-4321At least 8 chars with uppercase, lowercase, number, and special character
^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$Examples:
MyPass123!Secure@2024Matches major credit card formats (Visa, MasterCard, Amex, etc.)
^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|3[47][0-9]{13}|3[0-9]{13}|6(?:011|5[0-9]{2})[0-9]{12})$Examples:
41111111111111115555555555554444Matches MAC addresses with colon or dash separators
^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$Examples:
00:1B:44:11:3A:B700-1B-44-11-3A-B73-16 characters, letters, numbers, and underscores only
^[a-zA-Z0-9_]{3,16}$Examples:
user123john_doeMatches 5-digit or 9-digit US ZIP codes
^\d{5}(-\d{4})?$Examples:
1234512345-6789Matches 3 or 6 digit hexadecimal color codes
^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$Examples:
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