Password Strength Checker
Is your password easy to crack? Test it here safely without sending it online.
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How Safe is Your Password?
Hackers use sophisticated tools to crack passwords in seconds. Our Strength Checker evaluates your password based on mathematical entropy—a measure of randomness. The higher the entropy, the harder it is to guess.
Common Weaknesses
- Too short: Passwords under 12 characters are often vulnerable.
- Common words: Dictionary attacks can guess words like "password" or "admin" instantly.
- Predictable patterns: Sequences like "1234" or "qwerty" are extremely weak.
Frequently Asked Questions
Is this password generator safe?
Yes, absolutely. The passwords are generated locally in your browser using your device's cryptographic libraries. Nothing is ever sent to our servers, ensuring your data remains private and secure.
What makes a password strong?
A strong password is long (at least 12-16 characters), complex (mix of uppercase, lowercase, numbers, and symbols), and unpredictable. Avoiding common words, personal information, and sequential patterns (like 1234) is crucial.
Should I valid my password with a strength checker?
It is recommended to check the strength of your passwords to ensure they are resistant to modern cracking techniques. Our Strength Checker tool analyzes entropy and estimates cracking time to help you improve your security.
What is a passphrase?
A passphrase is a sequence of random words (e.g., 'CorrectHorseBatteryStaple') that is easy for humans to remember but hard for computers to guess. They are excellent alternatives to complex random strings for passwords you need to type frequently.
How often should I change my passwords?
Modern security guidelines suggest changing passwords only when you suspect a breach. It is more important to use unique, strong passwords for every account and enable Two-Factor Authentication (2FA) where possible.