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Password Strength Checker
Test password strength
Password Strength Checker
Analyze the security and break-time of your passwords
Your password is never sent to any server.
Checking happens 100% locally in your browser.
Check Your Password Security
Use this free online password strength checker to test how secure your passwords are. It analyzes complexity, length, and entropy to estimate how long it would take for a computer to crack it.
Why Password Strength Matters
Weak passwords are the most common entry point for cyberattacks. A strong password should:
- Be at least 12 characters long.
- Include a mix of uppercase letters, lowercase letters, numbers, and symbols.
- Not rely on common words or predictable patterns.
Privacy Note: Your password is checked locally in your browser using JavaScript. It is never sent to any server. safely.
Frequently Asked Questions
Is this tool free to use?
Yes, Password Strength Checker is completely free. No registration required.
Is my data secure?
All processing happens in your browser. Your data never leaves your device.