Password Strength Checker
Analyze password strength: entropy, crack time estimate, pattern detection.
You use this tool often? Pro includes files up to 500 MB and priority processing.
What is Password Strength Checker?
The strength checker analyzes a password by calculating entropy, detecting patterns and estimating crack time.
How to use this tool?
Enter your password and instantly get the analysis: score, entropy, crack time and recommendations.
Benefits
- Entropy in bits
- Estimated crack time
- Pattern detection
- 100% local and confidential
Frequently Asked Questions
- What criteria are analyzed?
- Length, character types, entropy in bits, sequence detection, repetitions and dictionary words. Estimated crack time.
- Is my password sent anywhere?
- No, the analysis is 100% local in your browser. No data leaves your device.
- What is entropy?
- Entropy measures unpredictability in bits. Higher means harder to guess. 80+ bits is considered very strong.
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Use →What is Password Strength Checker?
The strength checker analyzes a password by calculating entropy, detecting patterns and estimating crack time.
How to use this tool?
Enter your password and instantly get the analysis: score, entropy, crack time and recommendations.
Benefits
- Entropy in bits
- Estimated crack time
- Pattern detection
- 100% local and confidential
Frequently Asked Questions
- What criteria are analyzed?
- Length, character types, entropy in bits, sequence detection, repetitions and dictionary words. Estimated crack time.
- Is my password sent anywhere?
- No, the analysis is 100% local in your browser. No data leaves your device.
- What is entropy?
- Entropy measures unpredictability in bits. Higher means harder to guess. 80+ bits is considered very strong.
Similar Tools
Password Generator
Generate cryptographically secure passwords. Customize length, character sets and check strength. 100% in the browser.
Use →Pronounceable Password Generator
Generate easy-to-remember but secure passwords based on pronounceable syllables. Entropy and strength displayed.
Use →Encrypted Secret Sharing
Share a password or API key via an encrypted, single-use link (burn after reading). AES-256, free.
Use →