Don't trust valid-looking passwords. Our Strength Meter calculates the "Entropy" (unpredictability) of your password to estimate how long it would take a hacker to crack it. This runs entirely in your browser. We do not send your password to any server.
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Check Password Strength
Test your password strength locally. Check entropy and crack time estimates securely. Improve your security hygiene. Fast, free, and 100% private browser tool.
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About Check Password Strength
1
Type
Enter a password.
2
Analyze
See the strength bar and crack time.
3
Review Results
Verify the output looks correct before using or downloading it.
4
Save Your Output
Click the download or copy button to export your results to your device or clipboard.
Key Features
Entropy Calculation
Mathematically measures randomness.
Offline Check
Zero risk of interception.
Improvement Tips
Learn how to make your password stronger.
Frequently Asked Questions
Yes, because the checking logic is client-side. However, as a best practice, never type your real banking passwords into any third-party site.
Entropy measures how unpredictable a password is based on character set and length. Higher entropy means it's harder to crack.
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