A strong password generator is the easiest way to create secure, random passwords that resist brute-force and dictionary attacks. Our tool generates high-entropy passwords instantly, runs entirely in your browser and sends nothing to any server.
What makes a password strong?
A strong password combines several characteristics that make it resistant to automated attacks:
- Length: at least 16 characters. Every additional character multiplies the cracking time exponentially.
- Character variety: uppercase, lowercase, numbers and symbols (!@#$%^&*).
- True randomness: no dictionary words, names or predictable patterns.
- Uniqueness: a different password for every account.
A 16-character random password takes thousands of years to crack with current hardware. An 8-character one can fall in hours.
The most common password mistakes
According to annual data-breach reports, the world's most used passwords are still "123456", "password" and "qwerty". Beyond the obvious, watch out for these common patterns:
- Using your pet's or child's name with a birth year (e.g., Luna1998).
- Substituting letters with numbers in predictable ways (e.g., p4ssw0rd).
- Reusing the same password across multiple services — one breach exposes them all.
- Using dictionary words, even unusual ones: modern attacks try millions of combinations per second.
How to use our strong password generator
The process is instant:
- Choose the length (we recommend 20+ characters for important accounts).
- Select character types: uppercase, numbers, symbols.
- Click "Generate" and get a high-entropy password immediately.
- Copy it in one click and save it in your password manager.
The tool uses the browser's native cryptographic API (crypto.getRandomValues), ensuring true randomness. No data is ever sent to any server.
Why you need a password manager
Generating strong passwords is only the first step. To maintain unique passwords on every service, you need a password manager. Bitwarden is free and open-source; 1Password and Dashlane are paid alternatives with extra features. The risk of password reuse far outweighs the risk of using a reputable manager.
Frequently asked questions
How many characters should a strong password have in 2026?
For important accounts (banking, email, social media) use at least 16 characters, ideally 20. For less critical accounts, 12 random characters are sufficient. Length is the single most important factor: each extra character multiplies the brute-force cracking time exponentially.
Is it safe to generate passwords on a website?
Yes, as long as the generator runs client-side in your browser without sending data to a server. Our generator uses crypto.getRandomValues, the browser's native cryptographic API, and transmits nothing. You can verify this by going offline and confirming the tool still works.
Should I use a password manager?
Yes, it is the most practical way to maintain unique, complex passwords across all your services. Bitwarden is free and open-source; 1Password and Dashlane are popular paid options. The risk of password reuse far outweighs the risk of using a reputable, well-audited manager.
How often should I change my passwords?
Current NIST guidelines recommend changing passwords only when there is evidence of compromise, not on a fixed schedule. Forced periodic changes tend to produce weaker passwords. Instead, enable two-factor authentication (2FA) on every account that supports it.
What is the difference between a random password and a passphrase?
A random password is a meaningless string of characters (e.g., K#9mQ!vL2xPd). A passphrase combines four or more random words (e.g., ocean-lamp-river-cloud). Passphrases are easier to remember and, if long enough, equally secure. For critical services, we recommend 20+ character random passwords stored in a manager.
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