🔐 Password Generator
Generate a strong, random password of any length. Includes letters, numbers, and symbols.
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How Passwords Are Cracked — and How to Make Yours Stronger
Password security is measured by entropy — the mathematical unpredictability of a password. Entropy is calculated based on the size of the character set used and the length of the password. A password using only lowercase letters (26 characters) has less entropy than one using uppercase letters, numbers, and symbols (approximately 95 characters). Every additional character multiplies the number of possible combinations by the size of the character set.
Length matters more than complexity. A random 16-character password using only lowercase letters has more entropy than an 8-character password using all character types. The current practical security threshold is approximately 80 bits of entropy, which roughly corresponds to a 12-character random password with mixed character types, or a 20-character lowercase-only passphrase. Password-cracking hardware has accelerated dramatically in recent years — an 8-character password with all character types can be cracked in under an hour with dedicated hardware.
Common password mistakes: using personal information (birthdate, name, pet's name), substituting characters predictably (@ for a, 3 for e), using single dictionary words with common modifications (Password1!), reusing passwords across multiple sites, and using sequential numbers or keyboard patterns (123456, qwerty). These are all specifically targeted by sophisticated cracking algorithms.
Password managers are essential for modern security. A password manager (Bitwarden, 1Password, Dashlane) generates and stores strong unique passwords for every site, so you only need to remember one master password. This eliminates the main reason people reuse passwords — the impossibility of memorising dozens of unique random strings. Bitwarden is free, open-source, and audited; it's the most widely recommended option for personal use.
Two-factor authentication (2FA) adds a second layer of security beyond the password. Even if your password is compromised, an attacker can't access your account without the second factor (typically a time-based one-time code from an authenticator app). Enable 2FA on all important accounts — email, banking, social media — as a priority.
How to Create Strong Passwords
A strong password has three key properties: length (12+ characters minimum, 16+ is better), randomness (not based on dictionary words, names, or patterns), and uniqueness (never reused across different accounts). Length matters more than complexity — a 20-character lowercase passphrase is stronger than an 8-character complex password.
This generator creates cryptographically random passwords using a mix of uppercase, lowercase, numbers, and symbols. Save generated passwords in a reputable password manager (Bitwarden, 1Password, Dashlane) rather than trying to memorise or store them in plain text.