ToolCollection

Password Generator

Free online strong password generator. Generate secure, cryptographically random passwords using uppercase letters, lowercase letters, numbers, and symbols. Includes password entropy strength meter and character exclusion options. Generated 100% locally in your browser using the Web Crypto API.

4.9(1,268 reviews)
100% Private (No Data Stored)
Instant & Free

How to Use the Password Generator

1

Set Desired Length

Use the slider to choose your password length (recommended: 14 to 24 characters).

2

Select Character Sets

Toggle uppercase, lowercase, numbers, and special symbols.

3

Generate & Copy

Click "Generate Password" and copy the password to your password manager.

Password Entropy Formula

Entropy measures password unpredictability in bits:

Entropy (bits) = Length × log2(Pool Size)

Using all 95 printable ASCII characters for a 16-character password yields 16 × log2(95) ≈ 105 bits of entropy, which exceeds modern cryptographic security requirements.

Why Choose Our Password Generator?

Cryptographically secure random number generation (Web Crypto API)
Configurable length from 8 to 64 characters
Live entropy strength meter (Weak, Medium, Strong, Unbreakable)
Zero server communication — 100% client-side privacy

Pro Tips for Best Results

  • Bookmark this page (Ctrl+D / Cmd+D) for fast offline-capable access whenever you need it.
  • Use keyboard shortcuts (Tab / Enter / Space) for quick form navigation without touching your mouse.

Frequently Asked Questions