Secure password
generator.
Generate cryptographically secure passwords instantly. Runs entirely in your browser — no passwords are ever transmitted, stored, or logged. Configure length and character sets, copy with one click.
What makes a password
actually secure.
Most passwords are dangerously weak — not because people are careless, but because human brains are bad at generating randomness. Attackers know this and exploit it.
Length is the biggest factor
Every extra character multiplies possible combinations exponentially. A 16-character password from a 95-character pool has 10²⁵ possibilities — cracking it at 1 trillion guesses per second takes longer than the age of the universe.
Real randomness vs. patterns
When humans pick passwords they gravitate toward words, keyboard walks, and memorable substitutions. Attackers use dictionary and rule-based attacks that crack these patterns in milliseconds. Cryptographic randomness has no patterns to exploit.
Unique passwords per account
If one service is breached and you reused a password, attackers try it everywhere (credential stuffing). One strong, unique password per account — managed by a password manager — eliminates this entire attack vector.
How strong is your configuration?
Entropy measures how hard a password is to brute-force. More bits = exponentially more work for an attacker.
| Configuration | Pool | Length | Entropy | Rating | Time to crack (1T/sec) |
|---|---|---|---|---|---|
| Lowercase only | 26 chars | 8 | 37.6 bits | Weak | Under 1 minute |
| Letters + digits | 62 chars | 8 | 47.6 bits | Fair | ~1 day |
| All character sets | 95 chars | 12 | 78.9 bits | Good | ~24,000 years |
| All character sets | 95 chars | 16 | 105.2 bits | Strong | ~2 billion years |
| All character sets | 95 chars | 24 | 157.8 bits | Very strong | Longer than the universe |
* Offline brute-force at 1 trillion guesses/second. Online attacks are rate-limited and far slower.
About this tool.
Yes. The generator uses crypto.getRandomValues() — a browser-native cryptographic API. Verify it yourself: open DevTools → Network tab, generate passwords, and you’ll see zero network requests. Everything runs locally in your browser.
Math.random() is deterministic — if an attacker knows the seed, they can predict outputs. crypto.getRandomValues() draws from your OS entropy pool (hardware timing, etc.) and is cryptographically unpredictable. It’s the same source used for browser TLS connections.
Use a password manager — Bitwarden, 1Password, or your browser’s built-in manager. Generate a unique password here for each account and store it. You only need to remember one master password. Never write passwords in a notes app or reuse them across accounts.
For password manager storage: 16–24 characters, all character sets. You’ll never type it manually. For passwords you need to type (laptop login, Wi-Fi): 16 characters with letters + digits is still over 95 bits of entropy and much easier to type.
Marketing teams manage dozens of accounts — ad platforms, CRMs, analytics, client portals. Weak or reused passwords are one of the most common ways ad accounts get compromised, and a hijacked ad account can burn thousands in fraudulent spend before anyone notices. Free tool, no catch.