Password Strength Checker
Check how strong your password is. Everything stays in your browser -- nothing is sent anywhere.
Privacy: Your password never leaves your browser. All analysis is performed entirely client-side. No data is sent to any server.
About Password Strength Checker
Password Strength Checker analyzes your password and gives a detailed strength rating, estimated crack time, and specific improvement suggestions. It checks length, character variety (uppercase, lowercase, numbers, symbols), common patterns, dictionary words, and common passwords.
Understanding why a password is weak or strong helps you make better choices and build better password policies. The estimated crack time is calculated based on modern hardware brute-force speeds.
No passwords are sent to any server — all analysis runs in your browser.
Features
- ✓Strength rating: Very Weak to Very Strong
- ✓Estimated crack time at modern attack speeds
- ✓Detailed breakdown of weaknesses
- ✓Improvement suggestions
- ✓No server — your password stays local
Common Use Cases
- →Checking if your current passwords are strong enough
- →Learning what makes passwords stronger
- →Evaluating password policies for an application
- →Educating users about password security
Frequently Asked Questions
Is it safe to type my real password here?
All analysis is done locally in your browser — nothing is sent to any server. That said, it's safest to use similar but not identical passwords for testing.