Strong Password Generator: Create Uncrackable Passwords (2026)
Generate cryptographically secure passwords with 95+ bits of entropy. Free, no signup, runs entirely in your browser.
Weak passwords are the #1 cause of account breaches. A password like "password123" can be cracked in milliseconds. A 16-character password with mixed case, numbers, and symbols has ~95 bits of entropy — it would take a single GPU roughly the heat death of the universe to brute-force.
What Makes a Password Strong?
- Length is king: A 20-char lowercase-only password is stronger than an 8-char password with all character types. Each additional character doubles cracking difficulty.
- Randomness, not patterns: "Tr0ub4dor&3" looks strong but follows predictable patterns (leetspeak, common word). True random characters are what block attackers.
- No reuse: A unique password for every account. If one site gets breached, your other accounts stay safe.
How the Generator Works
The Password Generator uses crypto.getRandomValues() — the same cryptographic randomness source used by Node.js, OpenSSL, and browser TLS. Set your length (8-64 chars), toggle character sets (upper, lower, numbers, symbols), and click Generate. The entropy estimate shows you how strong your password is.
Pro tip: Use a password manager (Bitwarden, 1Password) to store generated passwords. The generator creates them — the manager remembers them.
FAQs
Are generated passwords stored?
No — they're generated and displayed in your browser only. Nothing is saved or transmitted.
What's the minimum recommended length?
16 characters for general accounts, 20+ for email, banking, and primary accounts.