Password Generator
Strong random passwords with custom rules
🔒 100% free · no signup · files never leave your device
Password strength comes down to one thing: entropy, the number of guesses an attacker needs. Every reused, dictionary-based or predictable password collapses against modern cracking rigs that test billions of candidates per second, and data breaches mean yesterday's 'clever' pattern is already in every attacker's wordlist. The only durable defense is genuine randomness — which humans are demonstrably terrible at producing.
This free password generator creates cryptographically strong random passwords using your browser's crypto.getRandomValues(), the same CSPRNG that underpins TLS — not the predictable Math.random(). You control length and character sets (lowercase, uppercase, digits, symbols), and a live strength meter reflects the real entropy of your choices. Generation happens entirely on your device, so no password ever crosses a network or touches a log. Whether you're securing an email account, a database or a Wi-Fi router, 16+ random characters from a full character set puts brute-force attacks beyond practical reach.
Why use Password Generator
Unique passwords for every account
Credential-stuffing attacks exploit reuse — generating a fresh random password per site contains any single breach.
Wi-Fi and router credentials
Default router passwords are in public databases; a long random replacement closes a common home-network hole.
Service accounts and API secrets
Machine credentials never need memorizing, so they can be maximum length with full character sets.
Shared team vaults
Generate per-service passwords for a company password manager instead of recycling the office 'standard' one.
Pro tips
- Length beats complexity: a 20-character lowercase password is stronger than a 10-character one with every symbol type.
- Avoid ambiguous characters (l, 1, I, O, 0) only when a human must read the password aloud — otherwise include everything for more entropy.
- Store generated passwords in a reputable manager, not a notes app or spreadsheet; the generator's job ends at the clipboard.
- If a site's rules reject symbols, increase length to compensate — 20–24 alphanumeric characters still yields excellent entropy.
- Change passwords only when there's evidence of compromise; frequent forced changes push people toward weaker patterns, per NIST guidance.
How to use Password Generator
- 1Set length and character options
- 2Click Generate
- 3Check the strength meter
- 4Copy your password
Frequently Asked Questions
Are generated passwords stored anywhere?▾
No. Passwords are generated with crypto.getRandomValues() locally and never leave your device.
What length is recommended?▾
At least 16 characters with mixed character types for strong security.