Password Strength Tester
Securely evaluate the resilience of your credentials against brute-force attacks. Our analyzer uses advanced entropy calculations directly in your browser.
Estimated time to crack
Instantly
Analysis
Our analysis uses the NIST digital identity guidelines to measure entropy and pattern recognition locally.
Use Passphrases
Multiple random words are harder to crack than complex short strings.
Avoid Patterns
Avoid sequences like "12345" or keyboard patterns like "qwerty".
Enable 2FA
Even a strong password is more secure with Two-Factor Authentication enabled.
Frequently Asked Questions
How is password strength evaluated?
The tool analyzes length, character variety, common patterns, dictionary words and estimated time-to-crack against modern hardware — all computed locally.
Is it safe to type a real password here?
The check runs 100% in your browser and nothing is transmitted. That said, as general security hygiene, it's best practice to test passwords similar to yours rather than the exact one you use.
What should I do if my password is weak?
Use a longer passphrase (16+ characters) or a password manager to generate and store unique, random passwords for every account, and enable two-factor authentication.