Enter a Password to Analyze
Type or paste a password above to see its strength analysis.
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Tool Information
Shortcuts
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How to Use
Follow these simple steps to check your password strength.
Enter Password
Type or paste your password to analyze.
View Analysis
See real-time strength breakdown.
Check Patterns
Detect common passwords and patterns.
Improve
Follow suggestions to strengthen.
Why Use This Checker?
The most comprehensive password strength analyzer.
Real-Time Analysis
Strength updates instantly as you type.
Entropy Calculation
Measures password randomness in bits.
Crack Time Estimation
Shows how long to brute-force crack.
Pattern Detection
Identifies common passwords and patterns.
Character Breakdown
Shows lowercase, uppercase, digits, symbols.
Improvement Tips
Actionable suggestions to strengthen passwords.
Frequently Asked Questions
Is my password sent to any server?
No. All analysis happens entirely in your browser. Your password never leaves your device and is never stored anywhere.
What is entropy in passwords?
Entropy measures password randomness in bits. Higher entropy means more possible combinations, making the password harder to crack.
What is a good password length?
We recommend at least 12 characters. For critical accounts, use 16+ characters. Passphrases (4+ random words) are both strong and memorable.
Should I use symbols and numbers?
Yes. Mixing character types (lowercase, uppercase, numbers, symbols) increases the pool of possible characters, making passwords significantly stronger.
What is crack time estimation?
It estimates how long a brute-force attack would take at 10 billion guesses per second, which is a modern GPU cracking speed.