Password Strength Checker
Test the strength of a password and learn which factors make it easier or harder to crack.
All analysis happens locally in your browser. The password is never sent to any server.
What Makes a Strong Password?
Attackers use automated tools that can attempt billions of guesses per second. Short or predictable passwords are quickly broken by brute-force or dictionary attacks.
A strong password combines sufficient length with a mix of character types and avoids obvious patterns. The goal is to make brute-force attacks computationally expensive and time-consuming.
Tips for Creating Better Passwords
- Aim for at least 12–16 characters, especially for important accounts.
- Combine uppercase letters, lowercase letters, numbers, and symbols.
- Avoid common words, phrases, keyboard patterns, and personal details.
- Use a reputable password manager to generate and store unique passwords for each site.
- Enable multi-factor authentication (MFA) wherever possible.