Free Password Generator
Create strong, cryptographically random passwords in seconds. Customize length up to 64 characters, toggle uppercase, lowercase, numbers, and symbols, and generate up to 10 passwords at once. Everything runs in your browser using crypto.getRandomValues — your passwords are never sent anywhere.
Configure your options above and click Generate.
🔒 Generated in your browser using crypto.getRandomValues — passwords never leave your device.
Never forget a password again
Store all your generated passwords securely in a password manager. Bitwarden is free, open-source, and trusted by millions.
Frequently Asked Questions
Are these passwords truly random?+
Yes. We use the Web Crypto API (crypto.getRandomValues), which provides cryptographically secure random numbers — the same standard used by security software. This is far more secure than Math.random().
Is it safe to generate passwords online?+
Yes. Our generator runs entirely in your browser. Your passwords are never sent to any server, never logged, and never stored. You can disconnect from the internet and it still works.
What makes a password strong?+
A strong password is long (16+ characters), random, and uses a mix of uppercase, lowercase, numbers, and symbols. Avoid dictionary words, names, or patterns like "123" or "abc".
How many passwords can I generate at once?+
Up to 10 passwords per click. Each one is independently randomized.
Should I store these passwords somewhere?+
Yes — use a password manager like Bitwarden (free and open-source) or 1Password. Never reuse passwords across sites, and never store them in plaintext files.
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How to Create a Strong Password
A strong password is your first line of defense against unauthorized access to your accounts. This generator creates passwords using the Web Crypto API (crypto.getRandomValues) — the same cryptographically secure randomness used by security software. Unlike Math.random(), it cannot be predicted or reverse-engineered.
What Makes a Password Strong?
Password strength comes down to two things: length and character diversity. A 16-character password using uppercase, lowercase, numbers, and symbols has roughly 9516 possible combinations — more than a quadrillion quadrillion. That makes brute-force attacks computationally infeasible. Our strength meter estimates entropy in bits using the formula: log₂(charset size) × length. Aim for at least 60 bits of entropy (shown as "Strong") for most accounts, and 80+ bits for sensitive ones like banking or email.
How to Use This Password Generator
- Set your length. 16 characters is a safe default for most sites. Use 20+ for important accounts like email, banking, or work.
- Choose character types. Enable all four (uppercase, lowercase, numbers, symbols) for maximum strength. Disable symbols only if a specific site rejects them.
- Enable "Exclude similar characters" if you ever need to type the password manually — it removes visually ambiguous characters like
l,1,O, and0. - Generate and copy. Click the Copy button next to your chosen password.
- Save it to a password manager. Never reuse passwords. A password manager like Bitwarden or 1Password stores them securely so you only need to remember one master password.
Why Random Passwords Beat Memorable Ones
Humans are predictable. Common password patterns — dictionary words, names, birth years, keyboard walks like "qwerty123" — are the first things attackers try. Even "clever" substitutions like P@ssw0rd are in every modern attack dictionary. A truly random 16-character password generated by a cryptographic source is objectively unguessable, regardless of how much an attacker knows about you.
Is It Safe to Generate Passwords in a Browser?
Yes — as long as the generation happens entirely client-side and the passwords are never transmitted. Every password this tool generates is created inside your browser tab using JavaScript. No network request is made. You can verify this by opening your browser's developer tools (Network tab) while generating — you'll see zero requests. The page works fully offline once loaded.