Regex for Email Address
Standard regular expression for validating email addresses per RFC 5322, matching username, at-symbol, domain name, and valid TLD extension.
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Validation Result:
MATCH ✓
Pattern Breakdown & Tokens
- • ^[a-zA-Z0-9._%+-]+ — mailbox name matching letters, digits, dots, plus and hyphens
- • @ — mandatory at-symbol delimiter
- • [a-zA-Z0-9.-]+ — domain host label
- • \.[a-zA-Z]{2,}$ — top-level domain extension (minimum 2 letters)
Code Snippets
JavaScript
const emailRegex = /^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/;
const isValid = emailRegex.test(email); Python
import re
pattern = r"^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$"
is_valid = bool(re.match(pattern, email)) Go (Golang)
matched, err := regexp.MatchString(`^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$`, email) PHP
$isValid = preg_match('/^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/', $email);Open the full tool: Open Full Regex Tester →
FAQ
How does this regular expression for Email Address work?
Standard regular expression for validating email addresses per RFC 5322, matching username, at-symbol, domain name, and valid TLD extension. The pattern is: ^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$
How to use this regex in JavaScript and Python?
In JavaScript: new RegExp("^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$").test(input). In Python: re.match(r"^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$", input).
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