Password Entropy Checker
Password entropy is a measure of how unpredictable or random a password is. The higher the entropy, the harder it is for attackers to guess or brute-force your password. Use this tool to estimate the entropy of any password and learn how to make your passwords as strong as possible.
Why does entropy matter? Passwords with low entropy are easy for hackers to crack using automated tools. High-entropy passwords are much more secure and can withstand even the most advanced attacks. Our entropy checker uses the character sets in your password (uppercase, lowercase, numbers, symbols) and its length to estimate its strength in bits.
- How to increase entropy: Use longer passwords and include a mix of character types. Avoid common words and patterns.
- What’s a good entropy value? Aim for at least 60 bits for important accounts. The higher, the better!
- Test your passwords: Enter any password above to see its estimated entropy. Try different combinations to see what makes a password strong.
For more tips on creating strong passwords, visit our Password Tips page. To generate a secure password instantly, use Password Generator.
Still have questions? Check our FAQ for more information about password security and best practices.