Password Strength Checker
Check your password strength instantly. Get crack time estimates, security score, and specific improvement suggestions. Your password never leaves your browser.
Your password is analyzed locally in your browser - never stored or transmitted
Enter a password above to check its strength
Get detailed analysis and improvement suggestions
🔒 All password analysis happens locally in your browser. Your password never leaves your device.
Frequently Asked Questions
What is brute force cracking?▼
Brute force cracking is when an attacker tries every possible combination of characters to guess your password. Longer passwords with more character types exponentially increase the time needed to crack them.
How does the crack time estimate work?▼
Crack time is estimated based on password length, character set size, and current cracking speeds (approximately 1 billion guesses per second for modern hardware). This provides a realistic security assessment.
What is a dictionary attack?▼
A dictionary attack uses a list of common words, passwords, and patterns. Our checker identifies if your password contains dictionary words or follows common patterns (like 'password123').
Should I change my password if it's weak?▼
Yes, immediately. Use our password generator to create a strong, unique password for each account. Never reuse passwords across different services.
What's the difference between entropy and crack time?▼
Entropy measures password unpredictability in bits. Higher entropy = harder to crack. Crack time is the practical estimate of how long it would take to guess the password.