Password Generator + Local Encrypted Vault

Create strong passwords and memorable passphrases. Save them locally in an encrypted Vault protected by your PIN. Nothing leaves your browser.

🔐 Secure RNG 🧠 Entropy & crack-time 📦 Batch list 🗄️ Encrypted Vault UUID Base64

Strong Password

Entropy: -
Crack time: -
Batch generate

Memorable Passphrase

Entropy: -

🔒 Encrypted Vault (Local)

Deletes all saved items from this browser.
Stored: 0

Your Vault is empty (or locked). Generate a password and click Save to Vault.

Tips

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Frequently Asked Questions

Is this password generator secure?

Yes. It uses the browser's cryptographically secure random generator (window.crypto.getRandomValues). Nothing is sent to any server. The encrypted Vault uses AES-GCM with PBKDF2 key derivation.

What password length is recommended?

We suggest 16-24 characters with upper+lower+digits+symbols, or a 4-6 word passphrase with a separator and a number.

Where are saved passwords stored?

Only in your browser's local storage, encrypted with AES-GCM using your Vault PIN. You can export or clear them anytime.

What is entropy?

Entropy measures password randomness in bits. Higher = harder to crack. A 16-character password with mixed characters has ~100 bits of entropy and would take centuries to brute-force.

✅ Do's and ❌ Don'ts for Password Security

✅ Do's

  • ✅ Do use 16+ characters with mixed case, numbers, and symbols.
  • ✅ Do use a unique password for every account.
  • ✅ Do enable two-factor authentication (2FA) wherever available.
  • ✅ Do use the encrypted Vault to save passwords securely.
  • ✅ Do export your Vault backup and store it safely offline.

❌ Don'ts

  • ❌ Don't reuse the same password across multiple sites.
  • ❌ Don't use personal info (birthday, name) in passwords.
  • ❌ Don't share your Vault PIN or master password.
  • ❌ Don't skip 2FA even if your password is strong.
  • ❌ Don't write passwords on sticky notes or unencrypted files.
🔐 How This Password Generator Works

Uses window.crypto.getRandomValues() — the same cryptographic API used by banking websites. Generate passwords from:

  • Random characters — mix uppercase, lowercase, digits, and symbols.
  • Memorable passphrases — random words with optional separator and numbers.

Crack-time estimates: A 16-char random password with all character types would take over 10 billion years to crack on modern hardware.

Also try: Username Generator · UUID Generator · QR Generator

Frequently Asked Questions

Is this tool free to use?

Yes. All UpTools calculators are completely free, with no sign-ups required.

Is my data private?

Yes. All calculations run locally in your browser. Nothing is uploaded to any server.

Does it work on mobile?

Yes. All tools are mobile-responsive and work on any device — phone, tablet, or desktop.

Can I use this offline?

Most tools work offline after the initial page load. No internet needed for calculations.

📐 How This Tool Works

This tool computes results entirely in your browser using JavaScript. No data is sent to any server, ensuring your privacy.

Results update instantly as you type — no waiting for server responses.

Also try: Calculator · Converter · Generator