Security
Password Strength Checker
Analyze password strength with entropy score, visual meter, and actionable feedback.
0 characters
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Frequently Asked Questions
Quick answers to common questions
How is strength calculated?+
We score length, character variety (upper, lower, digits, symbols), and penalize common passwords and patterns.
What is entropy?+
Entropy measures unpredictability in bits. Higher entropy means more possible combinations and harder brute-force attacks.
Is my password sent anywhere?+
No. Analysis runs locally in your browser.
What score is good enough?+
Aim for Strong or Very Strong (12+ chars with mixed character types).