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Free Password Strength Checker – Test Password Security & Crack Time Estimate
Check how strong your password is instantly. Security score, crack time estimate, and specific improvement tips. 100% local — password never transmitted.
✅ 100% Free⚡ Instant Results🔒 No Signup📱 Mobile Friendly🔐 No Data Stored
Password Strength Checker
🔒 Your password is never sent to any server — all analysis is local.
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Type a password above to see its strength analysis
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Common Use Cases
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Password Auditing
Test the strength of existing passwords before using them for critical accounts.
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Security Policy
Verify that generated passwords meet your organization minimum security requirements.
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Security Education
Demonstrate password security by testing weak vs strong passwords with concrete crack time estimates.
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Employee Training
Show employees why password length and complexity matter in security awareness training.
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High-Value Accounts
Verify passwords protecting email, banking, and cloud accounts meet very strong standards.
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Security Research
Analyze password patterns and strengths for red team exercises and penetration testing.
Frequently Asked Questions
Is it safe to type my real password here?
Yes — all analysis runs in your browser. Your password is never sent to any server, never stored, and never logged.
What makes a password very strong?
16+ characters, mix of uppercase/lowercase/numbers/symbols, no dictionary words, no sequential patterns.
How is crack time estimated?
Based on 10 billion guesses per second — a reasonable estimate for a modern GPU-based brute force attack.
Is the checker free?
Yes — completely free with no account required.
Should I use this with my actual passwords?
Yes — it is safe. The best practice after finding a weak password is to generate a stronger replacement.