Scan & Generate
Free Password Generator
Generate strong random passwords instantly. Choose your length and character types, then copy or encode as a QR code.
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Click Generate Strength —
What Makes a Strong Password?
Password strength is determined by two key factors: length and character set size. The number of possible combinations is character_set_sizelength.
| Length | Lowercase only | Upper + Lower + Numbers | All characters |
|---|---|---|---|
| 8 | 208 billion | 218 trillion | 6.6 quadrillion |
| 12 | 95 quadrillion | 3.2 × 10²¹ | 4.7 × 10²³ |
| 16 | 4.4 × 10²² | 4.7 × 10²⁸ | 3.4 × 10³¹ |
| 20+ | Practically uncrackable with current technology | ||
Password Best Practices
- Use at least 16 characters for important accounts
- Never reuse passwords across sites
- Use a password manager (Bitwarden, 1Password, iCloud Keychain)
- Enable two-factor authentication (2FA) wherever possible
- For WiFi passwords, 20+ characters is recommended — and creating a QR code means guests never need to type it
Encode Passwords as QR Codes
Use the Scan & Generate app to turn your WiFi password into a scannable QR code — guests connect with one tap, no typing needed.