Password Strength Checker
Analyze your password security instantly — 100% private, runs in your browser
Your password never leaves this page
Strength
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Very WeakWeakFairStrongExcellent
Length
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Entropy
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Pool Size
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Score
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Unique Chars
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Crack Time
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Security Criteria
1
Minimum Length (8+ characters)
At least 8 characters required. Aim for 16+ for high security.
2
Uppercase Letters (A–Z)
Contains at least one uppercase letter.
3
Lowercase Letters (a–z)
Contains at least one lowercase letter.
4
Numbers (0–9)
Contains at least one numeric digit.
5
Special Characters (!@#$…)
Contains at least one symbol or special character.
6
No Common Patterns
No keyboard walks, repeated sequences, or common words.
7
No Excessive Repetition
No single character repeated more than 3× in a row.
8
Recommended Length (16+ characters)
16 or more characters for high-security accounts.
Estimated Crack Time
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InstantHoursYearsCenturies∞