Password Generator
Generate strong, secure random passwords with customizable length and character options.
xkDXHWa1fE9uVzICFeatures
- ✓Cryptographically secure randomness using Web Crypto API
- ✓Customizable length from 4 to 128 characters
- ✓Toggle uppercase, lowercase, numbers, and symbols independently
- ✓Exclude ambiguous characters (O, 0, l, 1, I) for readability
- ✓Real-time entropy analysis with strength indicator and crack time estimate
- ✓Bulk generation — create up to 25 passwords at once
How to Use
- 1Set the desired password length using the slider (default is 16)
- 2Choose which character types to include: uppercase, lowercase, numbers, symbols
- 3Optionally enable "Exclude Ambiguous" to avoid confusing characters like O/0 and l/1
- 4Click "Generate" to create your passwords
- 5Copy individual passwords or use "Copy All" for bulk generation
Examples
Input
Length: 16 | Uppercase, Lowercase, Numbers
Output
kR7mXp2vNq4bYw9T
Input
Length: 32 | All character types enabled
Output
aG3$kP!mX7@nR2&vBq9#wL5*yT8^zF0
Input
Length: 20 | Exclude Ambiguous enabled
Output
FhX3nRv7KbWq9YmT2pZs
Why Use a Random Password Generator?
Passwords are the first line of defense for your online accounts, servers, and sensitive data. Weak or reused passwords are responsible for the majority of data breaches. A random password generator creates truly unpredictable credentials that are virtually impossible to guess through brute force or dictionary attacks, giving you a critical security advantage.
This tool uses the Web Crypto API (crypto.getRandomValues) to produce cryptographically secure random numbers. Unlike Math.random(), which is predictable and unsuitable for security purposes, the Web Crypto API draws from the operating system's entropy source. Every password generated here is as random as the hardware allows, making it suitable for production systems, databases, API keys, and personal accounts.
Password entropy — measured in bits — quantifies how unpredictable a password is. A 16-character password using uppercase, lowercase, and numbers has about 95 bits of entropy, meaning an attacker with a GPU cluster doing 10 billion guesses per second would need millions of years to crack it. The strength indicator on each generated password gives you an instant visual assessment of how secure your choice is.
For best security practices, use a unique password for every account, aim for at least 16 characters, and include multiple character types. If you need passwords that are easy to read or type (for example, WiFi passwords shared verbally), enable the "Exclude Ambiguous" option to remove characters that look similar, like O/0 and l/1/I. Store your passwords in a reputable password manager rather than writing them down or reusing them.
All passwords are generated entirely in your browser. Nothing is sent to any server, stored in any database, or logged anywhere. You can even use this tool offline once the page has loaded. For organizations handling sensitive infrastructure, client-side generation ensures your credentials never leave your machine.