Password Strength Checker
Enter your password to check its strength
How It Works
This password checker evaluates your password based on several key factors:
- Character variety (uppercase, lowercase, numbers, symbols)
- Password length and complexity
- Similarity to top one million passwords
- Entropy (measure of randomness)
Tips for Strong Passwords
- Use at least 12 characters - longer passwords are harder to crack
- Mix uppercase, lowercase, numbers, and special characters
- Avoid personal information (birthdays, names, etc.)
- Don't use common word patterns or keyboard patterns (qwerty, 123456)
- Consider using a password manager to generate and store secure passwords
Understanding Entropy
Entropy measures the unpredictability of your password:
- Below 40 bits: Very weak, easily crackable
- 40-60 bits: Moderate strength
- 60-80 bits: Strong
- 80+ bits: Very strong, suitable for sensitive accounts
About Time-to-Crack
The time-to-crack estimate assumes:
- A high-end computer making 10 billion guesses per second
- No prior knowledge of the password pattern
- Brute force attack methodology
Real-world scenarios may vary based on the attacker's resources and methods.