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100+ ready-to-use regex patterns for email, phone, URL, dates, IP, and more. Copy and test instantly.
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Validates standard email format
^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$RFC 5322 compliant email validation
(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])Alphanumeric username, 3-16 chars
^[a-zA-Z0-9_]{3,16}$US phone number with optional formatting
^\(?([0-9]{3})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$E.164 international phone format
^\+?[1-9]\d{1,14}$Indian mobile number
^(\+91[\-\s]?)?[0]?(91)?[789]\d{9}$HTTP/HTTPS URLs
https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)Valid IPv4 address
^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$IPv6 address (full form)
^(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$MAC address with : or - separator
^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$Min 8 chars, uppercase, lowercase, number, special
^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$MD5 hash string
^[a-fA-F0-9]{32}$SHA-256 hash string
^[a-fA-F0-9]{64}$ISO 8601 date format
^\d{4}-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[01])$US date format
^(0[1-9]|1[0-2])\/(0[1-9]|[12][0-9]|3[01])\/\d{4}$European date format
^(0[1-9]|[12][0-9]|3[01])\/(0[1-9]|1[0-2])\/\d{4}$24-hour time format
^([01]?[0-9]|2[0-3]):[0-5][0-9](:[0-5][0-9])?$12-hour time with AM/PM
^(0?[1-9]|1[0-2]):[0-5][0-9]\s?(AM|PM|am|pm)$Visa, Mastercard, Amex, Discover
^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|3[47][0-9]{13}|6(?:011|5[0-9]{2})[0-9]{12})$Credit card security code
^[0-9]{3,4}$Positive or negative integer
^-?\d+$Decimal number
^-?\d*\.?\d+$US dollar format
^\$?\d{1,3}(,\d{3})*(\.\d{2})?$Percentage value
^-?\d+(\.\d+)?%$Hex color code
^#?([a-fA-F0-9]{6}|[a-fA-F0-9]{3})$URL-friendly slug
^[a-z0-9]+(?:-[a-z0-9]+)*$Only letters and numbers
^[a-zA-Z0-9]+$Letters, numbers, spaces only
^[a-zA-Z0-9\s]+$Match HTML tags
<([a-z]+)([^<]+)*(?:>(.*)<\/\1>|\s+\/>)UUID version 4
^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-4[0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$US Social Security Number
^(?!000|666|9\d{2})\d{3}-(?!00)\d{2}-(?!0000)\d{4}$US ZIP code with optional +4
^\d{5}(-\d{4})?$Indian postal code
^[1-9][0-9]{5}$UK postcode format
^([A-Z]{1,2}\d[A-Z\d]? ?\d[A-Z]{2}|GIR ?0AA)$Extract file extension
\.[a-zA-Z0-9]+$Common image extensions
\.(jpg|jpeg|png|gif|webp|svg|bmp)$Valid JavaScript variable
^[a-zA-Z_$][a-zA-Z0-9_$]*$. Any character\\d Digit [0-9]\\w Word char [a-zA-Z0-9_]\\s Whitespace* 0 or more+ 1 or more? 0 or 1{n,m} n to m times^ Start of string$ End of string\\b Word boundary(?=...) Lookahead