Generate strong, secure passwords with KeePass-style options. Custom length, character sets, pronounceable mode, and real-time entropy strength meter. 100% client-side — nothing leaves your browser.
A few options make the difference between a guessable password and one that won't be cracked in your lifetime.
Set length to 20+ characters. Each extra character multiplies complexity exponentially. A 20-char password is astronomically harder to crack than a 10-char one.
Enable uppercase, lowercase, digits, and special characters together. A password using all four character types with 16+ chars is practically uncrackable by brute force.
Watch the entropy-based strength bar. Aim for "Very Strong" (80+ bits of entropy). The crack time estimate shows how long brute-force would take at 1 trillion guesses/second.
Click Copy to grab the password. Store it in a password manager like Bitwarden, 1Password, or KeePass — never in a text file or sticky note.
Generating a strong password is step one. Here's what else matters.
Never reuse passwords. If one site is breached, attackers try the same password everywhere (credential stuffing). Generate a new password for every account.
A good password manager (Bitwarden, 1Password, KeePass) remembers all your unique passwords. You only need to remember one master password.
Even the strongest password can be phished or leaked. 2FA means attackers need your password AND your phone. Always enable it on critical accounts.
A 20-character lowercase password has more entropy than a 12-character mixed password. Length is the single most important factor in password security.
Password1!, P@ssword, or your birthday are weak despite containing special chars. Random generation removes all human predictability from your passwords.
Use HaveIBeenPwned to see if your email has been in breaches. If it has, change those passwords immediately — even if they were strong.
Yes. Passwords are generated using crypto.getRandomValues() — the same cryptographically secure random number generator used in banking and security applications. It's not Math.random() (which is predictable). Everything runs in your browser; we never see your passwords.
Entropy is a measure of unpredictability in bits. It's calculated as log₂(charset_size ^ length). A password with 60 bits of entropy would take a modern GPU cracking rig roughly 36 days to brute-force. At 80 bits, that becomes over 100 years. At 100 bits, longer than the age of the universe. The strength meter shows this calculation in real time.
It removes characters that look alike in certain fonts: lowercase L (l), number 1 (1), uppercase I (I), number 0 (0), uppercase O (O), and pipe (|). Useful for passwords you need to type manually and want to avoid transcription errors.
Pronounceable mode generates passwords that alternate consonants and vowels, creating syllable-like sequences (e.g., "kovabexi"). They're easier to remember and type while still being randomized. Slightly lower entropy than pure random, but great for passwords you need to memorize.
Enter a pattern like Uulllldd!! where each character represents a class: U=uppercase, l=lowercase, d=digit, !=special, -=minus, _=underline, b=bracket, s=space, *=any random character. This lets you meet specific password requirements (e.g., "must start with a capital and end with a number").
For critical accounts (banking, email, password manager master): 20+ characters. For social media and general accounts: 16+ characters. For low-stakes accounts: 12+ characters. When in doubt, longer is always better — password managers remember the length for you.
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