How to Generate a
Strong Password
Create a cryptographically secure, random password in seconds — entirely in your browser, with no data stored or uploaded anywhere.
Try the Password GeneratorWhy password strength matters
Data breaches expose billions of passwords every year. In 2024, the RockYou2024 compilation leaked nearly 10 billion unique credentials. If you reuse a password across sites, one breach puts all your accounts at risk. Credential stuffing attacks — where attackers automatically try breached username/password pairs across thousands of sites — are now one of the most common forms of account takeover.
The solution is simple in theory but hard in practice: use a unique, random, long password for every account. A password generator makes this effortless — generate, copy, save to a password manager. Done.
Step-by-step: generate a strong password
Open the Password Generator
Visit the free Password Generator tool. No account needed — it runs entirely in your browser using the Web Crypto API.
Set your password length
Choose a length between 8 and 128 characters. For most accounts, 16–20 characters provides excellent security. For critical accounts (banking, email), use 24+.
Choose your character sets
Toggle uppercase letters, lowercase letters, numbers, and symbols. Including all four types creates the strongest passwords. Avoid symbols only if a site doesn't support them.
Copy and save to a password manager
Click Generate, then Copy. Paste the password into your password manager (Bitwarden, 1Password, etc.). Never reuse passwords across sites.
Password security best practices
Length matters more than complexity
A 20-character lowercase password is harder to crack than an 8-character password with symbols. Modern brute-force attacks are stopped more by length than character variety.
Use a password manager
The only practical way to use a unique, strong password for every site is a password manager. Bitwarden is free, open-source, and cross-platform.
Never use personal information
Birthdays, names, and common words are the first things attackers try. Even with substitutions (p@ssw0rd), dictionary attacks crack these in seconds.
Enable two-factor authentication
Even a weak password is significantly harder to crack with 2FA enabled. Pair a strong password with an authenticator app (not SMS) for maximum security.
Your password is never stored or sent anywhere
The generator uses window.crypto.getRandomValues() — the same API used by security software — and runs 100% in your browser. No generated password is ever logged, transmitted, or stored. Not even analytics sees what you generate.
Frequently asked questions
What makes a password 'strong'?
A strong password is long (16+ characters), random (not based on words or personal info), unique (not reused across sites), and uses a mix of character types. Length is the most important factor — a 20-character random string is practically impossible to brute-force.
Is the password generator secure?
Yes — it uses window.crypto.getRandomValues(), the Web Crypto API built into every modern browser. This is the same cryptographic standard used by security software. The password is generated locally in your browser and is never sent anywhere.
Should I use symbols in passwords?
Generally yes — symbols increase the character space, making brute-force attacks harder. However, some sites restrict which symbols are allowed. If a site rejects your password, try regenerating with symbols disabled.
How often should I change passwords?
Current NIST guidelines (2024) recommend changing passwords only when you have reason to believe they've been compromised — not on a fixed schedule. Forced rotation often leads users to weaker, predictable passwords.
What's the difference between a passphrase and a password?
A passphrase is a sequence of random words (e.g., 'correct horse battery staple'). It's long, memorable, and highly secure. A random character password is shorter but harder to remember. Both are strong — use whichever you prefer with a password manager.