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Base64 Encoder & Decoder
Encode and decode Base64 strings and images.
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Password Strength Checker
Check how strong and secure your password is with entropy analysis, crack time estimation, and improvement tips.
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Password Strength Checker & Entropy Calculator
Analyze password entropy (bits), crack time, and security strength in real-time
Strength RatingEnter Password
Entropy Score
0 bits
Est. Crack Time
N/A
Character Length
0 chars
Security Criteria Checklist
At least 12 characters long
Contains uppercase letters (A-Z)
Contains lowercase letters (a-z)
Contains numbers (0-9)
Contains special symbols (!@#$)
No common dictionary patterns
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Frequently Asked Questions
Is my password stored or transmitted?+
Never. All analysis happens in your browser JavaScript. Your password never leaves your device.
What makes a password truly strong?+
Length (12+ chars), randomness, and character variety. Avoid dictionary words, names, and predictable patterns.
What is entropy?+
Password entropy measures unpredictability in bits. Higher entropy = harder to crack. Aim for 70+ bits.
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