Password Strength Checker

Test your password security and get instant feedback

Check password strength with entropy analysis, estimated crack time, and actionable improvement suggestions. All processing happens locally in your browser.

Enter Password

✅ Password Best Practices

• Length matters most: Aim for at least 12-16 characters
• Mix character types: Use lowercase, uppercase, numbers, and symbols
• Avoid patterns: No keyboard patterns or sequential characters
• Unique passwords: Never reuse passwords across sites
• Use a password manager: Let it generate and store strong passwords

❌ What to Avoid

• Personal information: Names, birthdays, addresses
• Common words: Dictionary words, common phrases
• Simple substitutions: "P@ssw0rd" is still weak
• Repeating characters: "aaaaaa" or "111111"
• Short passwords: Anything under 8 characters

🔒 Your Privacy is Protected

All password checking happens entirely in your browser. Your password is never sent to any server or stored anywhere. It's completely safe to test your real passwords here.