Free Strong & Random Password Generator | 2026

🔒Password Generator

Generate secure, customizable passwords instantly

Generated Passwords

Estimated Strength: Strong Entropy: 0 bits

Password Length

Number of Passwords 1

Uppercase (A-Z) Lowercase (a-z) Numbers (0-9) Symbols (!@#$) Exclude Ambiguous Characters (0, O, l, 1)

🔒 Client-Side Security: Generated locally using Web Crypto API. Never stored or sent online.

How to Use the Strong & Random Password Generator

1. Set Password Length: Adjust the slider or type the desired character length (ranging from 8 to 128 characters).
2. Select Character Types: Choose whether to include uppercase letters, lowercase letters, numbers, and symbols.
3. Exclude Ambiguous Characters: Toggle this option to filter out confusing characters like similar-looking letters and numbers (e.g., 0, O, l, 1).
4. Choose Quantity: Select how many passwords you want to generate simultaneously (from 1 to 10).
5. Generate & Copy: Click the Generate Password button and use the copy options to save them.

How Does It Work?

This generator leverages the browser's native Web Crypto API (crypto.getRandomValues()) to ensure cryptographically secure random selection, protecting against brute-force attacks.

Formula or Method

• Entropy Calculation: Password strength and entropy (measured in bits) are calculated using the formula: $\text{Entropy} = \text{Length} \times \log_2(\text{Pool Size})$.
• Unbiased Randomization: Random byte values retrieved from cryptographic buffers are mapped uniformly across the active character pool.

Frequently Asked Questions

1. Is this password generator completely free?

Yes, the tool is 100% free with no registration or subscription required.

2. Are my generated passwords saved or stored anywhere?

No. All passwords are generated locally in your browser memory and vanish when you refresh or close the page.

3. What makes a password secure?

A secure password combines adequate length (12+ characters), a mix of uppercase and lowercase letters, numbers, and symbols, alongside complete randomness.

4. Can I use this tool on my mobile phone?

Yes, the responsive design ensures full compatibility across mobile devices, tablets, and desktop computers.