Password Regex Example

Require uppercase, lowercase, number, symbol, and a minimum length for strong-password policies.

This password regex example enforces a commonly used complexity baseline for account creation and admin workflows. It requires at least one lowercase letter, one uppercase letter, one digit, one non-alphanumeric symbol, and a total length between 10 and 64 characters. The lookahead structure keeps each requirement explicit so the pattern is easier to review during security checks. This is useful for frontend feedback before submission and for backend policy validation when your system stores password hashes, not raw strings. Keep in mind that regex complexity rules do not replace broader security controls such as rate limiting, credential stuffing protection, and multi-factor authentication. If your policy differs, you can tune required character classes or length ranges and test coverage in the Regex Tester before deployment.

/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[^A-Za-z0-9]).{10,64}$/